OFD locks

[Corinna Vinschen]

Hi guys,

I just pushed a patch to implement OFD locks.  It's just basically
working, but I only performed some very simple tests, so it probably
has a bug or two.

I'm offline until next Monday, but I wouldn't mind if somebody has a few
tests to check that OFD locks and the interaction with traditional POSIX
locks works as desired.  I looked into the GLibc testsuite but it is not
helpful in terms of testing locking.


Thanks for any coding input, see you next week,
Corinna