git-svn: make dcommit usable for glob users
* dcommit no longer requires the correct -i/GIT_SVN_ID option
passed to it. Since you're committing from HEAD (or another
commit that is a parent of HEAD), you'll be able to find
a commit with metadata information containing the SVN URL
that your HEAD was descended from anyways.
* I don't think dcommit ever worked for people using the
noMetadata option; so I don't think relying on metadata
is an issue.
* useSvmProps users shouldn't commit to SVN::Mirror created
repositories anyways, right?
* Users of globbing should automatically be able to commit
to paths that are not explicitly set in .git/config
Signed-off-by: Eric Wong <normalperson@yhbt.net>