Also fixes an msys (git-bash) incompatibility, similar to the one
fixed in crrev.com/4845f0ed694ff071da5f6ee937a0bce2ea4e6fd2.
This change doesn't actually use the wrapper in any new places, but
subsequent changes will be made to use it in places where
'exec python' is called directly, like gclient and fetch.
BUG=411518
R=iannucci@google.com
Review URL: https://codereview.chromium.org/1415993003
git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@297357 0039d316-1c4b-4281-b951-d872f2087c98
git-rebase-update - ensure all branches are up to date
git-new-branch - create branches
git-rename-branch - rename a branch while preserving parentage relationships
git-reparent-branch - change the parent of a branch, including rebasing it correctly onto that new parent.
git-squash-branch - collapse a branch into a single commit
git-upstream-diff - show the diff between the current branch and it's upstream branch
git-mark-merge-base - explicitly set what you want the above tools to consider the merge-base for the current branch.
R=agable@chromium.org, hinoka@chromium.org, stip@chromium.org, szager@chromium.org
BUG=261738
Review URL: https://codereview.chromium.org/184253003
git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@259520 0039d316-1c4b-4281-b951-d872f2087c98
mmoss@chromium.org
agable@chromium.org
r.c.ladan@gmail.com
iannucci@chromium.org