[commit: ghc] wip/angerman/llvmng's head updated: Adds x86_64 android layout (a6f589d)

[git at git.haskell.org]

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

Branch 'wip/angerman/llvmng' now includes:

     ee2acdf Bump version to 8.4
     351c460 Rip out hadrian subtree
     2278c4c Add hadrian as a submodule
     56fbfb3 Always use the safe open() call
     ce8d8c0 rts: Don't default to single capability when profiled
     6fd8629 Allow users to ignore optimization changes
     c384029 Only look for locales of the form LL.VV
     c01e413 Improve Control.Monad.guard and Control.Monad.MonadPlus docs
     cc034b3 Fix #14135 by validity checking matches
     fdccc66 users-guide: Consistently document LLVM version requirement
     15b2b95 users-guide: Fix various bits of markup
     af117d9 users-guide: Remove release notes for 8.2
     6b96ac4 Sync up ghc-prim changelog from GHC 8.2 branch
     504b706 Sync `ghc-prim` changelog from GHC 8.2, again
     f3f60b0 MkIface: Ensure syntactic compatibility with ghc 8.0.1
     7fd99ed relnotes: Note GCC compatibility constraint
     93e6ddd relnotes: Remove note about -split-sections on Windows
     c6cf13c Bump Cabal submodule
     1779e3b Fix #14618 by applying a subst in deeplyInstantiate
     2fc621d Make System.IO.openTempFile thread-safe on Windows
     ec6af9c Fix #14608 by restoring an unboxed tuple check
     fdfaa56 Make the Div and Mod type families `infixl 7`
     80d90c5 Adds `-llvmng`
     b4fbdb7 Use packed structs.
     36d1a1b no tbaa
     68a8567 Adds test
     4430839 Adds `smp` flag to rts.cabal.
     fafbdbf Move `iserv` into `utils` and change package name from `iserv-bin` to `iserv`
     2e91fb2 Update iserv-proxy
     80b2749 adds -latomic to. ghc-prim
     ba302ba Adds distrib/Makefile from @alpmestan
     e71ca91 replace git subtree with submodule.
     855c9a7 Add network submodule.
     60d67d0 bump submodules
     a6f589d Adds x86_64 android layout