[commit: ghc] wip/rae's head updated: Fix #10963 and #11975 by adding new cmds to GHCi. (cb3d01e)

[git at git.haskell.org]

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

Branch 'wip/rae' now includes:

     49560ba Fix commented out debugging code in ByteCodeGen
     227a29d Fix typos: tyars -> tyvars
     20f9056 Remove some old commented out code in StgLint
     3a34b5c Add a test case for #11731.
     f4fd98c Add a final demand analyzer run right before TidyCore
     928d747 Kill some unnecessary varSetElems
     2acfaae Comments only
     e24b3b1 Adjust error check for class method types
     31e4974 Remove some gratitious varSetElemsWellScoped
     8d66765 Increase an InScopeSet for a substitution
     aaaa61c users-guide: Note change in LLVM support policy
     10c6df0 utils: Provide CallStack to expectJust
     116088d testsuite: Add T11824
     cb0d29b testsuite: Add test for #11827
     9d063b6 Linker: Fix signedness mismatch
     933abfa rel-notes: Add note about UndecidableSuperClasses and #11762
     54e67c1 Remove dead function SimplUtils.countValArgs
     f0e331b Comments only, on Type.topSortTyVars
     a7ee2d4 Improve TcFlatten.flattenTyVar
     e9ad489 libdw: More precise version check
     d77981e rts/RetainerProfile: Remove unused local
     bf17fd0 deriveConstants: Verify sanity of nm
     f4e6591 Bump haddock submodule
     865602e Rework CC/CC_STAGE0 handling in `configure.ac`
     3f3ad75 Update `directory` submodule to v1.2.6.0 release
     4cbae1b Update array submodule to v0.5.1.1 release tag
     97f2b16 Add Windows import library support to the Runtime Linker
     04b70cd Add TemplateHaskell support for Overlapping pragmas
     89b6674 TH: Tweak Haddock language
     7a1c073 users-guide: Fix typo
     07dc330 validate: Note existence of config_args variable
     7005b9f Add flag to control number of missing patterns in warnings
     36a0b6d Check CCS tree for pointers into shared object during checkUnload
     177aec6 Linker: Clean up #if USE_MMAP usage
     a392208 Resolve symlinks when attempting to find GHC's lib folder on Windows
     93d85af Update `directory` submodule to v1.2.6.1 release
     dd920e4 Silence unused-import warning introduced by 93d85af9fec968b
     8a75bb5 Update haskeline submodule to 0.7.2.3 release
     3dac53f Make it easy to get hyperlinked sources
     10d808c relnotes: Add note about #11744 and workaround
     87114ae Use stdint types to define SIZEOF and ALIGNMENT of INTx/WORDx
     32ddd96 Remove obsolete/redundant FLEXIBLE_ARRAY macro
     350ffc3 rts: Limit maximum backtrace depth
     d1ce35d rts: Don't use strndup
     8556f56 Update `directory` submodule to v1.2.6.2 release
     a3c37c3 Remove unused import of emptyNameEnv
     d59939a Define TyCoRep.ppSuggestExplicitKinds, and use it
     17eb241 Refactor computing dependent type vars
     8136a5c Tighten checking for associated type instances
     9de405d Kill dead TauTvFlavour, and move code around
     81e2279 Update hsc2hs submodule
     91ee509 Mark GHC.Stack.Types Trustworthy
     96e1bb4 Update deepseq submodule to latest 1.4.2.0 snapshot
     ff290b8 Update binary submodule to 0.8.3.0 release
     15b7e87 Update `pretty` submodule to v1.1.3.3 release
     81b14c1 Update unix submodule to v2.7.2.0 release
     7f71dbe Bump haddock submodule
     81aa3d1 Reduce use of instances in hs-boot files
     871f684 Define NameSet.intersectFVs
     7319b80 Tighten up imports, white space
     353d8ae SCC analysis for instances as well as types/classes
     61191de Fix two buglets in 17eb241 noticed by Richard
     cdcf014 Tighten up imports on TcTyClsDecls
     687c778 Kill unnecessary varSetElemsWellScoped in deriveTyData
     62943d2 Build a correct substitution in dataConInstPat
     55b1b85 Accept tcrun045 output
     2e33320 Rename FV related functions
     98a14ff Point to note about FV eta-expansion performance
     7c6585a Remove mysterious varSetElemsWellScoped in tidyFreeTyCoVars
     8c33cd4 testsuite: Bump max bytes used of T4029
     f02af79 Improve the behaviour of warnIf
     edf54d7 Do not use defaulting in ambiguity check
     9421b0c Warn about simplifiable class constraints
     251a376 Test Trac #3990
     26a1804 wibble to simplifiable
     24d3276 A little more debug tracing
     c2b7a3d Avoid double error on out-of-scope identifier
     970ff58 Simplify defaultKindVar and friends
     6ad2b42 Refactor free tyvars on LHS of rules
     ed4a228 Fix typos: alpah -> alpha
     4221cc2 Typo: veraibles -> variables
     a9076fc Remove unused tyCoVarsOfTelescope
     0f96686 Make benign non-determinism in pretty-printing more obvious
     03006f5 Get rid of varSetElemsWellScoped in abstractFloats
     f834917 Very confusing typo in error message.
     4526940 Fix #11974 by adding a more smarts to TcDefaults.
     cb3d01e Fix #10963 and #11975 by adding new cmds to GHCi.