v2.4.2i - Integrated-Only Patch

This is a patch to gfxCardStatus that applies highandfew's patch for preserving integrated-only mode.

Note that this patch does not work on Sierra with 2011 and newer MBP's. Works fine with 2010 MBP's on sierra and may work fine with newer macs on OSX earlier then Sierra. For 2011+ Macs on Sierra, use 2.4.3 for now: https://github.com/steveschow/gfxCardStatus/releases/tag/v2.4.3i