Merge pull request #214 from radarhere/libwebp

Updated libwebp to 1.2.1

Author: hugovk

config.sh

@@ -14,7 +14,7 @@ XZ_VERSION=5.2.5
 TIFF_VERSION=4.3.0
 LCMS2_VERSION=2.12
 GIFLIB_VERSION=5.1.4
-LIBWEBP_VERSION=1.2.0
+LIBWEBP_VERSION=1.2.1
 BZIP2_VERSION=1.0.8
 LIBXCB_VERSION=1.14