using these to load long doubles, but they aren't implemented in hardware on (at least) UltraSPARC I and II machines. Emulate popc in the user trap handler as well. Re-arrange slightly to make support functions more accessible. Reviewed by: tmm
I believe have made all of libc .c's as consistent as possible.
of the (never committed) in-kernel version (with some optimizations and cleanups), which in turn was ported from NetBSD.
