test fixes for Solaris 2.6
Solaris 2.6's stock sed doesn't support alternatives in regular
expression. We workaround by breaking up the regexp.
#!/bin/sh
hg init
echo This is file a1 > a
hg add a
hg commit -m "commit #0" -d "0 0"
ls
echo This is file b1 > b
hg add b
hg commit -m "commit #1" -d "0 0"
hg co 0
# B should disappear
ls