* XMP SDK repository: https://github.com/adobe/XMP-Toolkit-SDK

* Removed XMP SDK FILE-IO source files unused by DNG SDK:

xmp_sdk/XMPFiles/source/FileHandlers/AIFF_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/AIFF_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/ASF_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/ASF_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/AVCHD_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/AVCHD_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/Basic_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/Basic_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/FLV_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/FLV_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/GIF_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/GIF_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/InDesign_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/InDesign_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/JPEG_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/JPEG_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/MP3_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/MP3_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/MPEG2_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/MPEG2_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/MPEG4_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/MPEG4_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/P2_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/P2_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/PNG_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/PNG_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/PSD_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/PSD_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/PostScript_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/PostScript_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/RIFF_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/RIFF_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/SVG_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/SVG_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/SWF_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/SWF_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/Scanner_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/Scanner_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/SonyHDV_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/SonyHDV_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/TIFF_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/TIFF_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/Trivial_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/Trivial_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/UCF_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/UCF_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/WAVE_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/WAVE_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/XDCAMEX_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/XDCAMEX_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/XDCAMFAM_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/XDCAMFAM_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/XDCAMSAM_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/XDCAMSAM_Handler.hpp
xmp_sdk/XMPFiles/source/FileHandlers/XDCAM_Handler.cpp
xmp_sdk/XMPFiles/source/FileHandlers/XDCAM_Handler.hpp
xmp_sdk/XMPFiles/source/FormatSupport/AIFF/AIFFBehavior.cpp
xmp_sdk/XMPFiles/source/FormatSupport/AIFF/AIFFBehavior.h
xmp_sdk/XMPFiles/source/FormatSupport/AIFF/AIFFMetadata.cpp
xmp_sdk/XMPFiles/source/FormatSupport/AIFF/AIFFMetadata.h
xmp_sdk/XMPFiles/source/FormatSupport/AIFF/AIFFReconcile.cpp
xmp_sdk/XMPFiles/source/FormatSupport/AIFF/AIFFReconcile.h
xmp_sdk/XMPFiles/source/FormatSupport/ASF_Support.cpp
xmp_sdk/XMPFiles/source/FormatSupport/ASF_Support.hpp
xmp_sdk/XMPFiles/source/FormatSupport/ID3_Support.cpp
xmp_sdk/XMPFiles/source/FormatSupport/ID3_Support.hpp
xmp_sdk/XMPFiles/source/FormatSupport/IFF/Chunk.cpp
xmp_sdk/XMPFiles/source/FormatSupport/IFF/Chunk.h
xmp_sdk/XMPFiles/source/FormatSupport/IFF/ChunkController.cpp
xmp_sdk/XMPFiles/source/FormatSupport/IFF/ChunkController.h
xmp_sdk/XMPFiles/source/FormatSupport/IFF/ChunkPath.cpp
xmp_sdk/XMPFiles/source/FormatSupport/IFF/ChunkPath.h
xmp_sdk/XMPFiles/source/FormatSupport/IFF/IChunkBehavior.cpp
xmp_sdk/XMPFiles/source/FormatSupport/IFF/IChunkBehavior.h
xmp_sdk/XMPFiles/source/FormatSupport/IFF/IChunkContainer.h
xmp_sdk/XMPFiles/source/FormatSupport/IFF/IChunkData.h
xmp_sdk/XMPFiles/source/FormatSupport/IPTC_Support.cpp
xmp_sdk/XMPFiles/source/FormatSupport/IPTC_Support.hpp
xmp_sdk/XMPFiles/source/FormatSupport/ISOBaseMedia_Support.cpp
xmp_sdk/XMPFiles/source/FormatSupport/ISOBaseMedia_Support.hpp
xmp_sdk/XMPFiles/source/FormatSupport/MOOV_Support.cpp
xmp_sdk/XMPFiles/source/FormatSupport/MOOV_Support.hpp
xmp_sdk/XMPFiles/source/FormatSupport/MacScriptExtracts.h
xmp_sdk/XMPFiles/source/FormatSupport/P2_Support.cpp
xmp_sdk/XMPFiles/source/FormatSupport/P2_Support.hpp
xmp_sdk/XMPFiles/source/FormatSupport/PNG_Support.cpp
xmp_sdk/XMPFiles/source/FormatSupport/PNG_Support.hpp
xmp_sdk/XMPFiles/source/FormatSupport/PSIR_FileWriter.cpp
xmp_sdk/XMPFiles/source/FormatSupport/PSIR_MemoryReader.cpp
xmp_sdk/XMPFiles/source/FormatSupport/PSIR_Support.hpp
xmp_sdk/XMPFiles/source/FormatSupport/PackageFormat_Support.cpp
xmp_sdk/XMPFiles/source/FormatSupport/PackageFormat_Support.hpp
xmp_sdk/XMPFiles/source/FormatSupport/PostScript_Support.cpp
xmp_sdk/XMPFiles/source/FormatSupport/PostScript_Support.hpp
xmp_sdk/XMPFiles/source/FormatSupport/QuickTime_Support.cpp
xmp_sdk/XMPFiles/source/FormatSupport/QuickTime_Support.hpp
xmp_sdk/XMPFiles/source/FormatSupport/RIFF.cpp
xmp_sdk/XMPFiles/source/FormatSupport/RIFF.hpp
xmp_sdk/XMPFiles/source/FormatSupport/RIFF_Support.cpp
xmp_sdk/XMPFiles/source/FormatSupport/RIFF_Support.hpp
xmp_sdk/XMPFiles/source/FormatSupport/ReconcileIPTC.cpp
xmp_sdk/XMPFiles/source/FormatSupport/ReconcileLegacy.cpp
xmp_sdk/XMPFiles/source/FormatSupport/ReconcileLegacy.hpp
xmp_sdk/XMPFiles/source/FormatSupport/ReconcileTIFF.cpp
xmp_sdk/XMPFiles/source/FormatSupport/Reconcile_Impl.cpp
xmp_sdk/XMPFiles/source/FormatSupport/Reconcile_Impl.hpp
xmp_sdk/XMPFiles/source/FormatSupport/SVG_Adapter.cpp
xmp_sdk/XMPFiles/source/FormatSupport/SVG_Adapter.hpp
xmp_sdk/XMPFiles/source/FormatSupport/SWF_Support.cpp
xmp_sdk/XMPFiles/source/FormatSupport/SWF_Support.hpp
xmp_sdk/XMPFiles/source/FormatSupport/TIFF_FileWriter.cpp
xmp_sdk/XMPFiles/source/FormatSupport/TIFF_MemoryReader.cpp
xmp_sdk/XMPFiles/source/FormatSupport/TIFF_Support.cpp
xmp_sdk/XMPFiles/source/FormatSupport/TIFF_Support.hpp
xmp_sdk/XMPFiles/source/FormatSupport/TimeConversionUtils.cpp
xmp_sdk/XMPFiles/source/FormatSupport/TimeConversionUtils.hpp
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/BEXTMetadata.cpp
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/BEXTMetadata.h
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/CartMetadata.cpp
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/CartMetadata.h
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/Cr8rMetadata.cpp
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/Cr8rMetadata.h
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/DISPMetadata.cpp
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/DISPMetadata.h
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/INFOMetadata.cpp
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/INFOMetadata.h
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/PrmLMetadata.cpp
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/PrmLMetadata.h
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/WAVEBehavior.cpp
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/WAVEBehavior.h
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/WAVEReconcile.cpp
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/WAVEReconcile.h
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/iXMLMetadata.cpp
xmp_sdk/XMPFiles/source/FormatSupport/WAVE/iXMLMetadata.h
xmp_sdk/XMPFiles/source/FormatSupport/XDCAM_Support.cpp
xmp_sdk/XMPFiles/source/FormatSupport/XDCAM_Support.hpp
xmp_sdk/XMPFiles/source/FormatSupport/XMPScanner.cpp
xmp_sdk/XMPFiles/source/FormatSupport/XMPScanner.hpp
xmp_sdk/XMPFiles/source/HandlerRegistry.cpp
xmp_sdk/XMPFiles/source/HandlerRegistry.h
xmp_sdk/XMPFiles/source/NativeMetadataSupport/IMetadata.cpp
xmp_sdk/XMPFiles/source/NativeMetadataSupport/IMetadata.h
xmp_sdk/XMPFiles/source/NativeMetadataSupport/IReconcile.cpp
xmp_sdk/XMPFiles/source/NativeMetadataSupport/IReconcile.h
xmp_sdk/XMPFiles/source/NativeMetadataSupport/MetadataSet.cpp
xmp_sdk/XMPFiles/source/NativeMetadataSupport/MetadataSet.h
xmp_sdk/XMPFiles/source/NativeMetadataSupport/ValueObject.h
xmp_sdk/XMPFiles/source/WXMPFiles.cpp
xmp_sdk/XMPFiles/source/XMPFiles.cpp
xmp_sdk/XMPFiles/source/XMPFiles.hpp
xmp_sdk/XMPFiles/source/XMPFiles_Impl.cpp
xmp_sdk/XMPFiles/source/XMPFiles_Impl.hpp
xmp_sdk/source/Host_IO-POSIX.cpp
xmp_sdk/source/Host_IO-Win.cpp
xmp_sdk/source/Host_IO.hpp
xmp_sdk/source/IOUtils.cpp
xmp_sdk/source/IOUtils.hpp
xmp_sdk/source/XIO.cpp
xmp_sdk/source/XIO.hpp
xmp_sdk/source/XMPFiles_IO.cpp
xmp_sdk/source/XMPFiles_IO.hpp

* MD5 source code come from the XMP SDK 3rd party.

* DNG SDK tarball: https://helpx.adobe.com/photoshop/digital-negative.html#dng_sdk_download
