[GHC] #15018: Bump base's version number to 4.12.0.0 in HEAD

[GHC]

#15018: Bump base's version number to 4.12.0.0 in HEAD
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        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:  8.6.1
       Component:  libraries         |              Version:  8.5
  (other)                            |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:  15042             |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4609
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"8f19ecc95fbaf2cc977531d721085d8441dc09b7/ghc"
 8f19ecc9/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="8f19ecc95fbaf2cc977531d721085d8441dc09b7"
 Bump base to version 4.12.0.0

 Summary: Bumps several submodules.

 Test Plan: ./validate

 Reviewers: hvr, bgamari

 Reviewed By: bgamari

 Subscribers: thomie, carter

 GHC Trac Issues: #15018

 Differential Revision: https://phabricator.haskell.org/D4609
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15018#comment:17>
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