git-svn-id: https://www.imagemagick.org/subversion/ImageMagick/trunk@17083 aa41f4f7-0bf4-0310-aa73-e5a19afd5a74
Don't override gamma with 1.000 when reading grayscale PNG images.


git-svn-id: https://www.imagemagick.org/subversion/ImageMagick/trunk@17085 aa41f4f7-0bf4-0310-aa73-e5a19afd5a74
git-svn-id: https://www.imagemagick.org/subversion/ImageMagick/trunk@17088 aa41f4f7-0bf4-0310-aa73-e5a19afd5a74
git-svn-id: https://www.imagemagick.org/subversion/ImageMagick/trunk@17090 aa41f4f7-0bf4-0310-aa73-e5a19afd5a74
git-svn-id: https://www.imagemagick.org/subversion/ImageMagick/trunk@17091 aa41f4f7-0bf4-0310-aa73-e5a19afd5a74
git-svn-id: https://www.imagemagick.org/subversion/ImageMagick/trunk@17093 aa41f4f7-0bf4-0310-aa73-e5a19afd5a74
git-svn-id: https://www.imagemagick.org/subversion/ImageMagick/trunk@17095 aa41f4f7-0bf4-0310-aa73-e5a19afd5a74