I've imported the current obstack versions into glibc.  The changes
should not effect the code but compilation:
- K&R support removed
- casts as lvalues removed

Ok to commit?

I'm appending the patch for reference,
Andreas

2004-01-24  Andreas Jaeger  <aj@suse.de>

	* malloc/obstack.h: Import gnulib version.
	* malloc/obstack.c: Likewise.