Make environment upgrades more robust by committing after each upgrade step.
Make environment upgrades more robust by committing after each upgrade step.

This was anyway the de facto way to make upgrades more robust (see e.g. [Bitten 786/trunk/bitten/main.py]).


git-svn-id: eda3d06fcef731589ace1b284159cead3416df9b@9568 af82e41b-90c4-0310-8c96-b1721e28e2e2

netjunki/trac-Pygit2,jun66j5/trac-ja,jun66j5/trac-ja,walty8/trac,walty8/trac,walty8/trac,netjunki/trac-Pygit2,jun66j5/trac-ja,netjunki/trac-Pygit2,jun66j5/trac-ja,walty8/trac