[commit: ghc] wip/angerman/llvmng's head updated: bump submodules. (d72df17)

[git at git.haskell.org]

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

Branch 'wip/angerman/llvmng' now includes:

     912a72d Fix T4437
     b8e324a base: Make documentation of atomically more accurate
     7d16d8a Fix #elfi -> #elif; unbreak -Werror.
     ca3700a Rename ghc-version -> ghcversion-file
     606bbc3 Stop generating make files when using hadrian.
     ef426ed Adds `-llvmng`
     f9f81e4 Adds test
     4ecd88f Add Pdep and Pext primops.
     d72df17 bump submodules.