James Zern ec666c7526 cmake: split gif detection from IMG deps
gifdec isn't part of imageio lib, it's only used by gif2webp.

Change-Id: I70bff378a32f8fb2ebb8a5a7701049ffff7f7992
(cherry picked from commit dcbc1c881a001f45081834a47391d673c1b96907)
2017-07-07 04:11:49 +00:00
..