[GHC] #4964: Scale columns in CCS profiling report to their contents

[GHC]

#4964: Scale columns in CCS profiling report to their contents
---------------------------------+------------------------------------------
    Reporter:  batterseapower    |       Owner:                
        Type:  feature request   |      Status:  new           
    Priority:  normal            |   Component:  Runtime System
     Version:  7.0.1             |    Keywords:                
    Testcase:                    |   Blockedby:                
          Os:  Unknown/Multiple  |    Blocking:                
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown  
---------------------------------+------------------------------------------
 If you have long identifiers or module names, they overflow the fixed-size
 columns in the cost-centre-stack report produced by -prof. This makes it
 extremely hard to read the report because it is no longer formatted in
 nice columns.

 The attached patch scales those columns to their contents so everything
 lines up nicely no matter how long your names are.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4964>
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