ErikZalm/Marlin — pull request #570 by hg42 (2013-08-02 20:05:29+00:00)
Title: separate INVERTING for MIN and MAX endstops (6 #defines instead of 3)

like https://github.com/ErikZalm/Marlin/pull/568 from Joey Doll, but with different names.

sorry for the additional hunks removing white space