Revert "Batch merge"

.gitlab-ci.yml

.gitlab/push-test-metrics.sh

compiler/hieFile/HieAst.hs

compiler/nativeGen/X86/CodeGen.hs

compiler/nativeGen/X86/Instr.hs

compiler/nativeGen/X86/Ppr.hs

compiler/parser/RdrHsSyn.hs

docs/users_guide/8.8.1-notes.rst

docs/users_guide/runtime_control.rst

docs/users_guide/separate_compilation.rst

docs/users_guide/using.rst

hadrian/build.cabal.bat

hadrian/build.cabal.sh

hadrian/src/Settings/Flavours/Development.hs

includes/rts/Flags.h

libraries/base/Data/Bits.hs

libraries/base/GHC/Int.hs

libraries/base/GHC/RTS/Flags.hsc

libraries/base/GHC/Word.hs

libraries/base/tests/IO/T12010/test.T