Thu Jul 29 09:55:10 2004  George Lebl <jirka@5z.com>

	* src/eval.[ch]: Allocate all memory for GelETree's, and the
	  various loop structures in long continuous spaces with the
	  structures aligned properly.  This seems to have little
	  impact on speed but it has some impact on memory usage, about
	  20% in a test that uses deep recursion.  As a side effect the
	  free lists are no longer purged.  Also fix the MEM_DEBUG_FRIENDLY
	  mode to actually free memory unless the MEM_DEBUG_SUPER_FRIENDLY
	  is on.

	* configure.in: automatically turn on -O3 for gcc, this seems
	  to make a very minor dent in performance.  -fomit-frame-pointer
	  does better, but we really don't want no debugging on this code.