[patch 17/21] Use different constraint for gcc < 4.1 in bitops.

-stable review patch. If anyone has any objections, please let us know. -- Use different constraint for gcc < 4.1 in bitops.h +m is really correct for a RMW instruction, but some older gccs error out. I finally gave in and ifdefed it. This fixes compilation errors with some

[patch 17/21] Use different constraint for gcc 4.1 in bitops.

-stable review patch. If anyone has any objections, please let us know. -- Use different constraint for gcc 4.1 in bitops.h +m is really correct for a RMW instruction, but some older gccs error out. I finally gave in and ifdefed it. This fixes compilation errors with some