Fix git_config_with_profile() profile variable lookup
Fix git_config_with_profile() profile variable lookup

git-config --includes requires that all include.path variables are
absolute paths.  Relative paths are skipped!

Signed-off-by: Stefan Hajnoczi <484520986196e4a799496429ce8a499eb6488adb@gmail.com>

stefanha/git-publish,stefanha/git-publish