* Removed reference to Makefile.common in Makefile.
* Removed Makefile.common because it's not used by any apckages anymore.
* Changed plist-version.mk to module.mk and added extra PLIST varibles
  to it.
* Removed all "used by" lines in options.mk since no otherpackages than
  qore uses it.
* Added applicaton.mk, this files is based on lang/python/application.mk
  and has the same purpose.
Changed: use wip/qore/module.mk instead of wip/qore/plist-version.mk
Changed: uses wip/qore/module.mk instead of wip/qore/plist-version.mk