Trim out some silly targets related to distclean and extraclean.
Trim out some silly targets related to distclean and extraclean.

There are some extraclean-* targets left, which is more related to
organizing the complexity, than to provide users with valid targets.

* Makefile.in:
  (fast-distclean): removed
  (extraclean-javahl): removed
  (extraclean-external): folded into the external-(clean|distclean) rule
  (extraclean-swig): removed. folded into extraclean-bindings
  (extraclean-ctypes-python): removed


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1301760 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion