Make the Escape key pause the emulator in linux when not in fullscreen.

I believe this is the same as in windows?


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5078 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/DolphinWX/Src/Frame.cpp

@@ -655,6 +655,9 @@ void CFrame::OnHostMessage(wxCommandEvent& event)
 	case WM_USER_STOP:
 		main_frame->DoStop();
 		break;
+	case WM_USER_PAUSE:
+		main_frame->OnPlay(event);
+		break;
 #endif
 	}
 }