Use absolute paths in addremove.
This is more consistent with other places in the code, which only use
the "relpath" returned by cmdutil.walk for display purposes.
#!/bin/sh
echo "[extensions]" >> $HGRCPATH
echo "mq=" >> $HGRCPATH
hg init a
cd a
hg qnew first.patch
hg qnew first.patch
touch ../first.patch
hg qimport ../first.patch
exit 0