patch applied (testsuite): Add test for trac #1051

[Ian Lynagh]

Sun Dec 24 04:59:49 PST 2006  Ian Lynagh <igloo at earth.li>
  * Add test for trac #1051

    A ./tests/ghc-regress/module/Mod178_2.hs
    M ./tests/ghc-regress/module/all.T +2
    A ./tests/ghc-regress/module/mod178.hs
    A ./tests/ghc-regress/module/mod178.stderr