[GHC] #2641: Revise the rules for -XExtendedDefaultRules

[GHC]

#2641: Revise the rules for -XExtendedDefaultRules
-------------------------------------+-------------------------------------
        Reporter:  simonpj           |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  lowest            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  6.8.3
      Resolution:                    |             Keywords:
                                     |  ExtendedDefaultRules
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #8171             |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by thomie):

 * keywords:   => ExtendedDefaultRules
 * related:   => #8171


Comment:

 See also #8171, where it is proposed to make the rules //more// liberal.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2641#comment:21>
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