Reject pushing to invalid reference names

If a reference name is not valid according to Git's rules for
the allowable syntax, or it contains "//" because a typo on the
client side introduced an unnecessary slash, reject the command
with an error.

Bug: issue 466
Change-Id: I89d8137a89225bc31813f5870d75568e5080b059
Signed-off-by: Shawn O. Pearce <sop@google.com>
1 file changed