Log Message:
- Don't force use of Xft rendering unless we are compiling under Darwin
  with X11 support (where it fixes the build). There is no compelling
  reason to use Xft otherwise.
- Use CPU detection code on all NetBSD platforms. It turns out that XChat
  properly deals with the case where we could figure out the number of
  CPUs but not their clock frequency.
- Add support for building XChat with X11-less GTK+ 2.x under Mac OS X.
  This fixes PR pkg/39328 by Adrian Portelli.

Bump package revision because of these improvements.