OpenSSL:
1) Fix extremely misleading text in crypto.4 manual page so it does not
appear to claim that a new cloned file descriptor is required for every
session.
2) Fix severe performance problem (and fd leak!) in openssl cryptodev
engine resulting from misunderstanding probably caused by said manual
page text.
3) Check for session-ID wraparound in kernel cryptodev provider. Also,
start allocating sessions at 1, not 0 -- this will be necessary when
we add ioctls for the creation of multiple sessions at once, so we
can tell which if any creations failed.