* merged ddtp support

* merged ddtp support

Patches applied:

 * michael.vogt@ubuntu.com--2005/apt--ddtp--0--base-0
   tag of otavio@debian.org--2005/apt--ddtp--0.6--patch-14

 * michael.vogt@ubuntu.com--2005/apt--ddtp--0--patch-1
   * fixed a problem when it comes to the cache rebuilding

 * michael.vogt@ubuntu.com--2005/apt--ddtp--0--patch-2
   * try harder to get the correct language code

 * michael.vogt@ubuntu.com--2005/apt--ddtp--0--patch-3
   * fix for output of the description and the debTranslationsIndex::Exists()

 * michael.vogt@ubuntu.com--2005/apt--ddtp--0--patch-4
   * made the translation downloading work

 * michael.vogt@ubuntu.com--2005/apt--ddtp--0--patch-5
   * FindInCache() uses the correct file now

 * michael.vogt@ubuntu.com--2005/apt--ddtp--0--patch-6
   * don't throw any more warnings

 * michael.vogt@ubuntu.com--2005/apt--ddtp--0--patch-7
   * merged with otavoi

 * michael.vogt@ubuntu.com--2005/apt--ddtp--0--patch-8
   * merged with otavios branch

 * michael.vogt@ubuntu.com--2005/apt--ddtp--0--patch-9
   * code cleanups (thanks matt!), moved UsePackage before the description list build in pkgcachegen to catch MMap errors early

 * michael.vogt@ubuntu.com--2005/apt--ddtp--0--patch-10
   * added a BUGS file with known problem, added apt-cdrom support for translated package descriptions

 * michael.vogt@ubuntu.com--2005/apt--ddtp--0--patch-11
   * updated with mainline

 * michael.vogt@ubuntu.com--2005/apt--ddtp--0--patch-12
   * added README.ddtp

 * michael.vogt@ubuntu.com--2005/apt--ddtp--0--patch-13
   * merged with apt--mvo

 * michael.vogt@ubuntu.com--2005/apt--ddtp--0--patch-14
   * added DDTP::URL-Remap. KILL THIS FEATURE once ddtp support is offical

 * michael.vogt@ubuntu.com--2005/apt--ddtp--0--patch-15
   * remvoed the remap feature again, dosn't work anyway

 * otavio@debian.org--2005/apt--ddtp--0.6--base-0
   tag of apt@packages.debian.org/apt--main--0--patch-71

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-1
   Port DDTP to APT 0.6 branch

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-2
   Fix sintax error on apt-cache

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-3
   Remove a unused var.

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-4
   Fix problems due APT and structural changes.

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-5
   Fix problems due APT and structural changes.

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-6
   Sync with apt@packages.debian.org/apt--main--0--patch-74

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-7
   Sync with apt@packages.debian.org/apt--main--0--patch-75

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-8
   Sync with apt--main--0--patch-76

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-9
   Remote a changelog entry added by mistake while merging.

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-10
   Sync with apt--main--0--patch-78

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-11
   Revert fixes changes to move these to apt--fixes--0 branch.

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-12
   Another fix included here by mistake. Moving it to apt--fixes--0 branch.

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-13
   Merge last changes from apt--main--0.

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-14
   Add FindInCache method to skip the rebuild of cache every time.

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-15
   Merge changes did by Michael Vogt to solve some rebuilding mistakes.

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-16
   Does't show Description twice

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-17
   Merge last fixes did by Michael but preserve my version of apt-cache.cc fix.

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-18
   Revert changes did by mistake on translation files.

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-19
   Merge last changes did from upstream side.

 * otavio@debian.org--2005/apt--ddtp--0.6--patch-20
   Sync with apt--main--0--patch-87