Mainline in regression-fix mode after Thanksgiving

[Nathan Sidwell]

Mark Mitchell wrote:

> Yes, compile-time regressions are OK -- but let's be circumspect.  For 
> example, Nathan's bitmap patches are probably more aggressive than I'd 
> like after this goes into effect.  Things that are less far-reaching and 

I concur that my most recent bitmap patch would not be appropriate after the
freeze.  I do have some small cleanups, confined to bitmap.c, in mind that I
would consider OK :)

nathan

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