darcs patch: Added GZipUtils to handle .tar files wit... (and 1 more)

27 Oct 2010

      2 patches for repository http://darcs.haskell.org/cabal-install:

Tue Oct 26 23:23:43 EEST 2010  Dmitry Astapov 
  * Added GZipUtils to handle .tar files with the same code as .tar.gz

Wed Oct 27 00:26:06 EEST 2010  Dmitry Astapov 
  * Use "maybeDecompress" to handle broken proxies that transparenty decompress network streams. Closes #622, #686. Cabal update could fail in some cases, see http://trac.haskell.org/http/ticket/109283