Problem with the "optimized" build

[Jon Masamitsu]

The "optimized" target  does not currently build due to the error

"/net/karachi/scratch/jmasa/hg_gc_baseline_ref/src/share/vm/gc_implementation/shared/spaceDecorator.cpp", 
line 36: Error: value is not a member of HeapWord.

I'll be fixing this shortly.  I would normally push through 
hotspot-gc/hotspot (aka gc_baseline)
but hotspot-gc/hotspot currently has the initial G1 push and we were 
planning on letting
it cook there until early next week before pushing it up.  If this is 
causing anyone a problem
right now, I can push through a different baseline to alleviate that 
pain.  Just let me know.

Thanks to John C. for finding this bug.