patch applied (ghc-6.6/packages/regex-base): BUGFIX: remove extra ' tail' from a RegexContext instance

[Ian Lynagh]

Mon Mar  5 09:02:41 PST 2007  Chris Kuklewicz <haskell at list.mightyreason.com>
  * BUGFIX: remove extra 'tail' from a RegexContext instance
  
  The (MatchResult b) instance of RegexContext used both pattern
  matching and 'tail' to get the non-first entries of a list.  This meant
  the 2nd entry of the list was lost and if the list had only one item then
  it also meant a run time error when forced.

    M ./Text/Regex/Base/Context.hs -1 +1