quagga: Add 0.99.4, fix bgp package name, some cleanups.

quagga: Add 0.99.4, fix bgp package name, some cleanups.
* Added version 0.99.4 which fixes a number of bugs in the previous
  release, several critical bugs. See quagga homepage for details.
* Fix the name of BGP package and init scripts - it should be bgpd
  not bpgd.  Discovered when looking at the change log for the OWMNR
  project.
* Added myself as the maintainer.
* Add a prerm script from the base quagga package which stops all the
  sub deamons. Otherwise if you just erase the main package all the
  sub daemons keep running. Normally dependencies stop this, so this
  only if the user forces deletion.
* Bump PR on 0.99.2 and 0.99.3 to pick up changes.
* Remove PR from the .inc file, this is to be specified in the .bb
  files.
* Re-order header to match style guide layout on the wiki.
* Allow a directory addition to be passed through from .bb to the
  .inc. Use it in the 0.99.2 to indicate that the source for that
  version are now in the attic subdirectory.