templatekw: fix extras, manifest and showlist args (
issue1989)
Removing the explicit parameters from keywords signature is easier than copying
and reproducing the original argument list.
#!/bin/sh
echo "[extensions]" >> $HGRCPATH
echo "mq=" >> $HGRCPATH
hg init a
cd a
echo 'base' > base
hg ci -Ambase -d '1 0'
hg qnew -mmqbase mqbase
hg qsave
hg qrestore 2