tests/test-hgk

mercurial.iss: backout 08bbed8ac9b8

Not a complete backout, the bash_completion script is still installed.

#!/bin/sh

echo "[extensions]" >> $HGRCPATH
echo "hgk=" >> $HGRCPATH

hg init repo
cd repo
echo a > a
hg ci -Am adda
hg debug-cat-file commit 0