Implement render to main in linux. In order to compile this in you will have to have libgtk2.0-dev (or your distributions equivalent) installed. If not dolphin-emu will still build, but without render to main operational.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5176 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/DolphinWX/Src/Frame.h

@@ -64,6 +64,8 @@ class CFrame : public wxFrame
 		{
 			#ifdef _WIN32
 				return(m_Panel->GetHandle());
+			#elif defined(HAVE_X11) && HAVE_X11
+				return m_Panel;
 			#else
 				return this;
 			#endif