oiio gammaX.Y color spaces management #1445
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Description
Manage openImageIO GammaX.Y color space occuring on some png images by reversing the gamma correction and setting sRGB linear as original color space. The gamma value is obtained by decoding the X.Y substring in the color space name delivered by openImageIO.
Related to: #1365
Implementation remarks
Managing GammaX.Y color spaces in this way prevents to update the OCIO configuration file.