patch applied (packages/base): Add Data.String, containing IsString(fromString); trac proposal #1126

[Ian Lynagh]

Tue Jan 30 05:48:41 PST 2007  Ian Lynagh <igloo at earth.li>
  * Add Data.String, containing IsString(fromString); trac proposal #1126
  This is used by the overloaded strings extension (-foverloaded-strings in GHC).

    A ./Data/String.hs
    M ./Foreign/Marshal/Pool.hs -1 +1
    M ./GHC/Base.lhs -9
    M ./base.cabal +1
    M ./package.conf.in +1