osutil: cleanups
- use tabs
- eliminate old-style function pointer calls
- eliminate weird scoping
- eliminate assignment-in-iff
- use !foo rather than foo == NULL
#!/bin/sh
hg init
echo This is file a1 > a
hg add a
hg commit -m "commit #0" -d "1000000 0"
ls
echo This is file b1 > b
hg add b
hg commit -m "commit #1" -d "1000000 0"
hg co 0
# B should disappear
ls