OVopen in innd.c

[Heath Kehoe]

In innd.c, OVopen() is called before the fork().  This is a problem
because in the new ovdb code, OVopen aquires a shared lock on a
file in pathrun (to indicate that the database is in use).

This lock does not survive the fork.  So I want to move the OVopen()
in innd.c after the fork, right before the "Set number of open channels"
comment.

Any objections?

--heath