Use a custom template to generate the Info.plist for the OS X bundle.

This allows us to add keys that don't exist in the CMake template.
I added the keys from the Info.plist that was generated by our SCons build
to the new template.

Source/Core/DolphinWX/CMakeLists.txt

@@ -124,13 +124,7 @@ if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
 	# Ask for an application bundle.
 	set_target_properties(${DOLPHIN_EXE} PROPERTIES
 		MACOSX_BUNDLE true
-		MACOSX_BUNDLE_BUNDLE_NAME Dolphin
-		MACOSX_BUNDLE_ICON_FILE Dolphin.icns
-		MACOSX_BUNDLE_GUI_IDENTIFIER com.dolphin-emulator.dolphin
-		MACOSX_BUNDLE_SHORT_VERSION_STRING ${DOLPHIN_WC_DESCRIBE}
-		MACOSX_BUNDLE_LONG_VERSION_STRING ${DOLPHIN_WC_REVISION}
-		MACOSX_BUNDLE_BUNDLE_VERSION "${DOLPHIN_VERSION_MAJOR}.${DOLPHIN_VERSION_MINOR}"
-		MACOSX_BUNDLE_COPYRIGHT "Licensed under GPL version 2"
+		MACOSX_BUNDLE_INFO_PLIST ${CMAKE_CURRENT_SOURCE_DIR}/Info.plist.in
 		)
 
 	# Install Cg framework into application bundle.