trac.version: allow bootstrap during initial setup, as we now need to be able to import some trac packages (`trac.util.dist`) from setup.py.
trac.version: allow bootstrap during initial setup, as we now need to be able to import some trac packages (`trac.util.dist`) from setup.py.

Closes #9374.


git-svn-id: eda3d06fcef731589ace1b284159cead3416df9b@9806 af82e41b-90c4-0310-8c96-b1721e28e2e2

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