[GHC] #3855: switch back to using a darcs repo for bytestring, and reenable the "redundant specialise pragmas" warning

[GHC]

#3855: switch back to using a darcs repo for bytestring, and reenable the
"redundant specialise pragmas" warning
---------------------------------+------------------------------------------
    Reporter:  igloo             |        Owner:  igloo       
        Type:  bug               |       Status:  new         
    Priority:  high              |    Milestone:  6.14.1      
   Component:  Build System      |      Version:  6.13        
    Keywords:                    |   Difficulty:              
          Os:  Unknown/Multiple  |     Testcase:              
Architecture:  Unknown/Multiple  |      Failure:  None/Unknown
---------------------------------+------------------------------------------
 Switch back to using a darcs repo for bytestring.

 Then reenable the "redundant specialise pragmas" warning (the 0.9.1.5
 release contains some redundant specialise pragmas, which breaks the
 build).

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3855>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler