- Sec "Best practices for debian/control" added, Sec "Writing useful

- Sec "Best practices for debian/control" added, Sec "Writing useful
      descriptions" moved under there
    - Sec "Upstream home page" added in debian/control section
    - Sec "Miscellaneous advice" empty, removed
    - Sec "Overview of maintainer tools": tools now categorized into
      subgroups; do cross-linking from this section into other parts of
      the document where these tools are discussed
    - Sec "Overview of maintainer tools": add entries for sbuild,
      build-essential, linda; improved entries for pbuilder, devscripts
    - Sec "Tools for porters" renamed and readapted to "Porting
      infrastructure and automation"; move tool discussion down to the
      appendix; improve Sec "buildd" a bit
    - README-contrib added giving information for authors, contributors,
      and translators

git-svn-id: svn://anonscm.debian.org/ddp/manuals/trunk/developers-reference@1979 313b444b-1b9f-4f58-a734-7bb04f332e8d