largefiles: don't override matchandpats for always matchers (issue4334)
This makes hg log --follow --patch work, since in cmdutil._makelogrevset we
use the non-follow matcher for hg log --follow --patch with no file arguments.
$ 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