try to get everything to compile correctly again

try to get everything to compile correctly again

base/intmath.hh:
    Don't return -1 in FloorLog2.  That's wierd.  Assert instead.
    If you care about this, you should check for zero yourself.
    Create seprate versions for uint32_t, uint64_t, int32_t, and
    int64_t.  signed vs unsigned so that error checking can be done
    correctly.  32 vs 64 for speed.
    Finally, fix a little bug in CeilLog2 that will make it return
    the correct result for 1.
kern/tru64/tru64_events.cc:
    fix #includes

--HG--
extra : convert_revision : c47915fc417fdc194a5561949a5366ffb266e693