Update GIFLIB to 5.1.4 DO NOT MERGE am: 75c90ad75c  -s ours am: fcb372c282 am: 7998de9149  -s ours am: d7a50967ff
am: 301b8f1180

Change-Id: I3e3ab67b16d93b7296f54df390a02171a4036deb