fbv: patch up support for libpng 1.5+

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/fbv/fbv-1.0b-libpng15.patch

@@ -0,0 +1,24 @@
+Support for libpng 1.5+ shamelessly taken from Gentoo.
+
+Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
+
+--- a/png.c
++++ b/png.c
+@@ -69,7 +69,7 @@
+         fclose(fh); return(FH_ERROR_FORMAT);
+     }
+     rp=0;
+-    if (setjmp(png_ptr->jmpbuf))
++    if (setjmp(png_jmpbuf(png_ptr)))
+     {
+ 	png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
+         if(rp) free(rp);
+@@ -161,7 +161,7 @@
+         fclose(fh); return(FH_ERROR_FORMAT);
+     }
+     rp=0;
+-    if (setjmp(png_ptr->jmpbuf))
++    if (setjmp(png_jmpbuf(png_ptr)))
+     {
+ 	png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
+         if(rp) free(rp);