The goal here is to be able to send a compilation and test farm a set of
branches to test. To do so, we need, per repository:

  - the git URL where to fetch the code (needs to be reachable by the test
    farm)
  - a branch to switch to
  - a commit to checkout

This small script grabs a set of local checkouts, ensure that the checked out
branch is pushed to a remote repository and generates the necessary
information for someone else to checkout the same configuration.

=== Intallation

intel-submit-build depends on:

  - GitPython (Fedora package: GitPython)

=== Configuration

A configuration file (defaults to ~/.gfx-repos) intructs the script which
checkouts it should look at. Here is an example of such a configuration file:

repositories =  {
    'kernel': {
        'path': '~/gfx/sources/linux-2.6'
    },
    'libdrm': {
        'path': '~/gfx/sources/drm',
	'remote': 'test-remote',
    },
    'intel-gpu-tools': {
        'path': '~/gfx/sources/intel-gpu-tools',
    },
}

repositories is a dictionary of dictionaries, mapping a name to a repository
description. The keys that describe a repository are:

  'path' (required):
    The path of the checkout

  'remote' (optional, defaults to 'origin'):
    The remote where the local branch should have been pushed already