git-svn-id: https://www.imagemagick.org/subversion/ImageMagick/trunk@16854 aa41f4f7-0bf4-0310-aa73-e5a19afd5a74
Fix for older versions of libtiff.

git-svn-id: https://www.imagemagick.org/subversion/ImageMagick/trunk@16855 aa41f4f7-0bf4-0310-aa73-e5a19afd5a74
git-svn-id: https://www.imagemagick.org/subversion/ImageMagick/trunk@16858 aa41f4f7-0bf4-0310-aa73-e5a19afd5a74
git-svn-id: https://www.imagemagick.org/subversion/ImageMagick/trunk@16860 aa41f4f7-0bf4-0310-aa73-e5a19afd5a74
git-svn-id: https://www.imagemagick.org/subversion/ImageMagick/trunk@16863 aa41f4f7-0bf4-0310-aa73-e5a19afd5a74