backport gd config.w32 to support freetype 2.5

Author: weltling

ext/gd/config.w32

@@ -9,6 +9,7 @@ if (PHP_GD != "no") {
 	if (
 		CHECK_LIB("libjpeg_a.lib;libjpeg.lib", "gd", PHP_GD) &&
 		CHECK_LIB("freetype_a.lib;freetype.lib", "gd", PHP_GD) &&
+		CHECK_HEADER_ADD_INCLUDE("ft2build.h", "CFLAGS_GD", PHP_GD + ";" + PHP_PHP_BUILD + "\\include" + ";" + PHP_PHP_BUILD + "\\include\\freetype") &&
 		CHECK_LIB("libpng_a.lib;libpng.lib", "gd", PHP_GD) &&
 		CHECK_HEADER_ADD_INCLUDE("gd.h", "CFLAGS_GD", PHP_GD + ";ext\\gd\\libgd") &&
 		(CHECK_HEADER_ADD_INCLUDE("png.h", "CFLAGS_GD", PHP_GD +  ";" + PHP_PHP_BUILD + "\\include\\libpng15") ||