[devel] Imported from libpng-1.5.0beta27.tar

pngtest.c

@@ -1716,4 +1716,4 @@ main(int argc, char *argv[])
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_5_0beta26 your_png_h_is_not_version_1_5_0beta26;
+typedef version_1_5_0beta27 your_png_h_is_not_version_1_5_0beta27;