- Added the explanation about how to replace an .orig.tar.gz.

- Added the explanation about how to replace an .orig.tar.gz.
  closes: #150392
- Mostly deleted the paragraph about security upload in the
  section explaining source NMU. Just added a link to point to
  "Handling security-related bugs". closes: #159935
- Added a link to the Technical Committee web page (in the "Bug
  housekeeping" section). closes: #151365
- Explain uploads to testing-proposed-updates, mentions briefly
  stable-security and testing-security. closes: #149666
  Removed the comment about uploads to frozen.
- Documented the "Developer's packages overview" web portal.
  closes: #158650
- Added a reference to debian-l10n-english in "Writing useful
  descriptions". closes: #158609
- Added a Best Packaging Practice section for "Packages using
  autoconf/automake". closes: #158045
- Documented associated features to db.debian.org like SSH key
  replication and *.debian.net DNS entry. closes: #155389

git-svn-id: svn://anonscm.debian.org/ddp/manuals/trunk/developers-reference@1812 313b444b-1b9f-4f58-a734-7bb04f332e8d