Fix a bug described in the slash'em bugs page at Sourceforge. When
attributes are undergoing adjustment (from drinking a potion of gain
ability, for instance), don't display "you feel wise" or "you feel weak"
messages if worn equipment is keeping the relevant attribute at some point
below max or above min and the current value doesn't actually change.
The old logic just checked whether you were at max or min and assumed that
when not, the value would be changing. Now it checks whether the value
actually did change. But it doesn't intercept attempts to go over max or
under min at the same point any more; I hope it hasn't introduced any new
bugs in the process.
bb8ec3e1d5