patch applied (packages/Cabal): Clarify docs about LocalBuildInfo installedPkgs field

[Ian Lynagh]

Mon Jan 10 16:59:41 PST 2011  Duncan Coutts <duncan at haskell.org>
  * Clarify docs about LocalBuildInfo installedPkgs field
  Only deps of current package, not all installed packages.
  Confusion reported by quuuux on #haskell.

    M ./Distribution/Simple/LocalBuildInfo.hs -1 +2

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=packages/Cabal;a=darcs_commitdiff;h=20110111005941-adfee-59826affa990d7c0707973980ae17165b3086223.gz