test-glog: pass the list of files to commit
test-glog uses debugsetparents instead of update+merge to create
some funky DAGs, and so the dirstate contents won't be consistent
with the checked out revision.
Passing an explicit list of files to commit reduces a bit the
dependency on the dirstate.
Using a non-deprecated rawcommit might be better here.
(binary:application/octet-stream)