I hope this makes it easier for people to contribute to git-flow.

By setting the environmental variable POSIXLY_CORRECT, getopt behaves
strictly POSIX-compatible.  This fixes the incorrect getopt parsing
style that breaks git-flow in several flavours of Linux.

Many thanks to Thiana for figuring this one out.

This should fix issues #28 and #29.

This fixes issue #59.

This implementation does not rely on Bash-specific functionality.

This is useful for small projects.

Simply step aside to the master branch instead.

For example, you could set the versiontag prefix to be:

    git config --global gitflow.prefix.versiontag "production/\$(date +%Y/%m/%d/)"

which would result in tag names like:

    production/2010/09/22/my-hotfix-or-feature-name

NOTE:
Although this is a useful addition in the current version of git-flow,
in a future reimplementation of it in Python, this will be replaced by
hook scripts, so be sure not to rely on this feature too much for now.

This reverts commit 19a6e24a.

This was a local experiment that I pushed to Github accidentally.

This makes it easy to download the submodule from behind a corporate
firewall.

Thanks Alexander Groß.

This has been requested by at least 10 people now, so it might be time
for one.