convert: pass absolute paths to git (SEC) Fixes CVE-2016-3105 (1/1). Previously, it was possible for the repository path passed to git-ls-remote to be misinterpreted as a URL. Always passing an absolute path to git is a simple way to avoid this.

  $ echo "[extensions]" >> $HGRCPATH
  $ echo "mq=" >> $HGRCPATH

  $ hg init

  $ echo 'base' > base
  $ hg ci -Ambase
  adding base

  $ hg qnew -mmqbase mqbase

  $ hg qsave
  $ hg qrestore 2
  restoring status: hg patches saved state