[Bf-committers] Helper git hooks

[Sergey Sharybin]

Hey everyone,

We're still encountering unwanted changes to the submoduels even so i
published information about how to avoid this :(

For those who're on linux (OSX might work as well tho) here're hooks
which would help avoid submodules change accidents [1]

Simply put this hooks to  git/hooks under corresponding name and make
them executable.

- pre-commit will prevent commit if you've got staged changes to submodules
- prepare-commit-msg will put information about changed submodules to
a commit message template.

be welcome to tweak the hooks further and make them working on other platforms!

[1] http://wiki.blender.org/index.php/User:Nazg-gul/DevTools#Git_hooks

P.S. One of the ideas how to improve the hooks is to also check
whether submodule is changing to an exiting hash in the upstream.

-- 
With best regards, Sergey Sharybin