Specify new name for patches directory and add a dedicated script for msys2

patches/msys2/patch.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+echo "This script should be run from the patches/msys2 directory"
+
+cp --force ./sound/ofOpenALSoundPlayer.* ../../../../libs/openFrameworks/sound/
+cp --force ./makefileCommon/config.addons.mk ../../../../libs/openFrameworksCompiled/project/makefileCommon/config.addons.mk
+
+echo "Patch for msys2 complete"