Log Message:
Updated freeimage to version 3.17.0.

Changelog(release notes):

Release 3.17.0 adds many improvements for ICO, TIFF, PNG, HDR, TGA, GIF, RAW, 
JXR, JP2, Exif plugins.It comes with new conversion functions for RGBA16/RGBAF
formats, as well as new functions used to deal with external pixel buffers
(ConvertFromRawBitsEx, CreateView). Other useful added functions are
ReslaleRect, GetMemorySize, SetMetadataKeyValue and the FIQ_LFPQUANT
quantizer algorithm. The library has been updated with the new LibPNG (1.6.16)
, LibTIFF (4.0.4), LibRaw (0.17.a1), LibWebP (0.4.2), OpenEXR (2.2.0).