[libpng10] Imported from libpng-1.0.29rc3.tar

pngtest.c

@@ -1548,4 +1548,4 @@ main(int argc, char *argv[])
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_0_29rc2 your_png_h_is_not_version_1_0_29rc2;
+typedef version_1_0_29rc3 your_png_h_is_not_version_1_0_29rc3;