[GHC] #15615: Rename some mutable closure types for consistency

[GHC]

#15615: Rename some mutable closure types for consistency
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           Reporter:  AndreasK       |             Owner:  (none)
               Type:  task           |            Status:  new
           Priority:  normal         |         Milestone:  8.6.1
          Component:  Runtime        |           Version:  8.4.3
  System                             |
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):  Phab:D4784     |         Wiki Page:
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 Description taken from the diff:

 {{{
 SMALL_MUT_ARR_PTRS_FROZEN0 -> SMALL_MUT_ARR_PTRS_FROZEN_DIRTY
 SMALL_MUT_ARR_PTRS_FROZEN -> SMALL_MUT_ARR_PTRS_FROZEN_CLEAN
 MUT_ARR_PTRS_FROZEN0 -> MUT_ARR_PTRS_FROZEN_DIRTY
 MUT_ARR_PTRS_FROZEN -> MUT_ARR_PTRS_FROZEN_CLEAN
 }}}

 Naming is now consistent with other CLEAR/DIRTY objects (MVAR, MUT_VAR,
 MUT_ARR_PTRS).

 (alternatively we could rename MVAR_DIRTY/MVAR_CLEAN etc. to MVAR0/MVAR)

 Removed a few comments in Scav.c about FROZEN0 being on the mut_list
 because it's now clear from the closure type.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15615>
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