[commit: ghc] master's head updated: Revert "compiler: Write .o files atomically. See #14533" (e6ce174)

[git at git.haskell.org]

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

Branch 'master' now includes:

     806cc23 Build and copy libffi shared libraries correctly and enable dynamically linking ghc.
     4b752d5 Update CI images to GHC-8.4.4 & cabal-install-2.4.1.0
     e87ae47 Drop support for i386 and PowerPC in MachO linker
     04b7f4c ghc-in-ghci: Fix capitalization of hieFile
     2e9426d hWaitForInput-accurate-socket test
     ac34e78 Remove bogus assertion
     6cce36f Add AnonArgFlag to FunTy
     e61f6e3 Expression/command ambiguity resolution
     ee284b8 Fix regression incorrectly advertising TH support
     a990312 Exit with exit code 1 when tests unexpectedly pass
     1059e23 gitlab-ci: Only build x86_64-deb8 and fedora27 for releases
     b85068f Include closure header size in StgLamLift's estimations
     8897018 User's Guide: update info on kind inference
     ae7d1ff User's Guide: forall is a keyword nowadays
     6ba3421 testsuite: Fix whitespace in hp2ps error message
     9059343 base: Allow fusion for zip7 and related
     14586f5 Disable fragile test cases: T14697 T5559 T3424
     f320f3b Fix the ghci063 test on Darwin (Trac #16201)
     4dbacba Skip T3424 when fast()
     5bc195b Treat kind/type variables identically, demolish FKTV
     5c084e0 RTS: Add missing memory barrier
     2e8f664 Fix intermittent hie002 failure
     f838809 Cleanup iserv/iserv-proxy
     c26d299 Visible dependent quantification
     f37efb1 Lexer: turn some fatal errors into non-fatal ones
     8442103 Hadrian: introduce ways to skip some documentation targets
     9aa2727 use --docs=no-sphinx in both Hadrian CI jobs
     b1c7ffa Fix parsing of expected performance changes for tests with non-alpha characters.
     b90695c gitlab-ci: Pull docker images from ghc/ci-images registry
     161f102 Drop Docker images
     d298cb9 gitlab-ci: Produce DWARF-enabled binary distribution
     aeefc90 testsuite: Suppress ticks when comparing -ddump-simpl output
     1bceb64 gitlab-ci: Give deb9-unreg job a distinct cache key
     1285d6b gitlab-ci: A bit of reorganization
     f77229e detect 'autoreconf' path during configure, and use it in hadrian
     e2ae52c Don't leave .hi files after running Haddock tests
     22c2713 Hadrian: track mingw, ship it in bindists, more robust install script
     e7080be Revert "compiler: Refactor: extract `withAtomicRename`"
     e6ce174 Revert "compiler: Write .o files atomically. See #14533"