Bug fix + tiny option#9

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artemave wants to merge 3 commits intoandrep:masterfrom

artemave:master

Commits on Jun 14, 2011

No longer broken when git svn goes interactive (e.g. prompting
artemave
committed
option to specify revision so that big repositories don't take ages to
artemave
committed

Commits on Jun 27, 2011

make git-svn-clone-externals update existing externals
artemave
committed