Fixed a bashism with the use of $RANDOM in hgeditor.
The variable $RANDOM is not POSIX so a portable /bin/sh may not define
it. When creating a directory with a random name it's better to use
mktemp, which, even though is not POSIX, exists in common Unixes
including Linux, OpenBSD, FreeBSD and MacOS X.
#!/bin/sh
hg init test
cd test
cat > .hg/hgrc <<EOF
[server]
validate=1
EOF
echo alpha > alpha
echo beta > beta
hg addr
hg ci -m 1
cd ..
hg clone test test-clone
cd test-clone
cp .hg/store/data/beta.i tmp
echo blah >> beta
hg ci -m '2 (corrupt)'
mv tmp .hg/store/data/beta.i
hg push 2>&1 | "$TESTDIR/filtertmp.py"