Merge remote branch 'origin/master' into fix#7704

HACKING

HACKING.md

README.md

aclocal.m4

bindisttest/ghc.mk

boot

compiler/deSugar/Coverage.lhs

compiler/deSugar/DsArrows.lhs

compiler/ghc.mk

compiler/ghci/Linker.lhs

compiler/hsSyn/HsExpr.lhs

compiler/hsSyn/HsUtils.lhs

compiler/llvmGen/LlvmCodeGen/Ppr.hs

compiler/main/CodeOutput.lhs

compiler/main/DriverPipeline.hs

compiler/main/DynFlags.hs

compiler/main/HscMain.hs

compiler/parser/Parser.y.pp

compiler/parser/RdrHsSyn.lhs

compiler/rename/RnExpr.lhs