patch applied (ghc): Document -fwarn-unrecognised-pragmas; fixes trac #3031

[Ian Lynagh]

Thu Mar  5 06:31:28 PST 2009  Ian Lynagh <igloo at earth.li>
  * Document -fwarn-unrecognised-pragmas; fixes trac #3031

    M ./docs/users_guide/flags.xml +7
    M ./docs/users_guide/glasgow_exts.xml -1 +1
    M ./docs/users_guide/using.xml +17

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20090305143128-3fd76-f42b7dda5fc14c5a10f954b26badf7d5274ace63.gz