[B2-devel] A few fixes

[Brian J. <bjj...@us...>]

Folks,

Here are a few small fixes to BII:
 - Use "-O3 -OPT:Olimit=0 -IPA" instead of "-Ofast" for MIPSPro
   builds.  "-Ofast" breaks floating point emulation, and the new
   optimizer settings produce code that's just as fast.
 - Clean up some build warnings in main_unix.c
 - Try to lock the pthreads mutex in the B2_mutex destructor before
   unlocking it.  It's illegal to unlock a mutex you don't have
   locked, and in fact it causes core dumps with Irix pthreads.

If these changes look OK, I'd appreciate it someone would check them
in.

Thanks,

						Brian J. Johnson

--------------------------------------------------------------------

  "You have greater impact on others by the way you listen than by the
   way you talk."
                                           -- Unknown