[commit: ghc] wip/angerman/llvmng's head updated: Merge branch 'feature/D4058-cross-compiler-bindist' into wip/angerman/llvmng (aa5f532)

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Repository : ssh://git@git.haskell.org/ghc

Branch 'wip/angerman/llvmng' now includes:

     3befc1a Bump arcanist-external-json-linter submodule
     1ba2851 Expose monotonic time from GHC.Event.Clock
     13758c6 Added a test for 'timeout' to be accurate.
     098dc97 Give a reference to Foreign.Concurrent.
     b6204f7 Untag the potential AP_STACK in stg_getApStackValzh
     2ca8cf6 Add Functor Bag instance
     afc04b2 Outputable: Add pprTraceException
     ec2b433 Build utilities with the bootstrap compiler when cross compiling
     4e4e717 Fix binary distributions of cross compilers
     658ae0b Adds `-llvmng`
     8c4816e Adds test
     265d2bb bump submodule.
     aa5f532 Merge branch 'feature/D4058-cross-compiler-bindist' into wip/angerman/llvmng