added missing pngquant-2.4.0_fix-epels.patch

pngquant-2.4.0_fix-epels.patch

@@ -0,0 +1,11 @@
+--- pngquant-2.4.0.1.orig/rwpng.c	2015-04-11 23:24:38.000000000 +0100
++++ pngquant-2.4.0.1/rwpng.c	2015-04-19 16:07:01.044937378 +0100
+@@ -55,7 +55,7 @@
+ #define omp_get_max_threads() 1
+ #endif
+ 
+-#if PNG_LIBPNG_VER < 10600
++#if PNG_LIBPNG_VER < 10500
+ typedef png_const_charp png_const_bytep;
+ #endif
+