Make path to git binary a preferences (makes windows support easier)
Revert "patches for metacallo under win32 added"

This reverts commit 7b750966ef9fde80a0df838a2095bb118771eec2.
fix gitPath lookup on class side

Metacello-Git-tfel.31
fixes for windows

Metacello-Git-tfel.32
Merge pull request #1 from timfel/master

Windows support