bug 847727 - clean up scripts/. r=rail

--HG--
extra : rebase_source : 52777084e8a81ea45760eec3facc4100efef59a0
bug 847727 - vcs_sync multi repo support. r=rail

--HG--
rename : scripts/hg_git.py => scripts/vcs-sync/initial_beagle.py
rename : scripts/hg_git.py => scripts/vcs-sync/vcs_sync.py
extra : rebase_source : 62de06e045277670ce40f0ffa19591ef96f170a7