Problem with include/bitstring.h

[Paul Goyette <paul%whooppee.com@localhost>]

While looking at some other stuff, I noticed that the operations 
described in bitstring(3) and implement as macros in include/bitstring.h 
can have a multiple-evaluation problem if the macro arguments have side 
effects (such as a ++ on the bit-number).

Shouldn't we include a warning about this, both in the man page and in 
the code?

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| Paul Goyette     | PGP Key fingerprint:     | E-mail addresses:          |
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