color: mark --no-color as deprecated (--color=never has the same effect)
This should've been marked deprecated when --color was first introduced, but
it was something I overlooked.
mention overlay bundle file in global --repository option
see http://mercurial.selenic.com/wiki/LookingIntoBundles
Drop mentioning symbolic path names for the sake of brevity. This is
a common feature of path options anyway.