Added patch for wxWidgets 3.0.2 for Mac OSX 10.10 (Yosemite).

* Patch was taken from https://trac.macports.org/ticket/44524 for the upstream
  bug of http://trac.wxwidgets.org/ticket/16329.

patches/wxwidgets-3.0.2_macosx_yosemite.patch

+=== added file 'patches/wxwidgets-3.0.2_macosx_yosemite_webview_webkit.mm.patch'
+--- patches/wxwidgets-3.0.2_macosx_yosemite_webview_webkit.mm.patch	1970-01-01 00:00:00 +0000
++++ patches/wxwidgets-3.0.2_macosx_yosemite_webview_webkit.mm.patch	2014-10-29 18:17:55 +0000
+@@ -0,0 +1,11 @@
++--- src/osx/webview_webkit.mm.orig	2014-09-16 07:27:52.000000000 -0600
+++++ src/osx/webview_webkit.mm	2014-09-16 07:28:12.000000000 -0600
++@@ -28,7 +28,7 @@
++ #include "wx/hashmap.h"
++ #include "wx/filesys.h"
++
++-#include <WebKit/WebKit.h>
+++#include <WebKit/WebKitLegacy.h>
++ #include <WebKit/HIWebView.h>
++ #include <WebKit/CarbonUtils.h>
++