[GHC] #15923: Skip performance tests if not in a git repo

[GHC]

#15923: Skip performance tests if not in a git repo
-------------------------------------+-------------------------------------
        Reporter:  davide            |                Owner:  davide
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.6.3
       Component:  Test Suite        |              Version:  8.6.2
      Resolution:                    |             Keywords:  performance
                                     |  tests git notes
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  12758             |  Differential Rev(s):  D5367
       Wiki Page:                    |
  Performance/Tests                  |
-------------------------------------+-------------------------------------
Changes (by davide):

 * differential:   => D5367


-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15923#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler