* handling postinst script when converting to/from .slp packages.
* alien needs to handle relocatable conffiles, partially relocatable
  packages, and packages that have maultiple parts that relocate
  differently.
* rpm ghost file support. On conversion, make preinst move file out of the
  way, postinst put it back. Thus emulating the behavior of rpm.
* seems slackware packages may now incliude an install/slack-desc
  with a description in it
