[commit: ghc] wip/erikd/remove-nat's head updated: RtsFlags: Make `mallocFailHook` const correct (69ceab2)

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

Branch 'wip/erikd/remove-nat' now includes:

     e340520 Comments only explaining export list parsing.
     94f2ee1 Explain linter optimization for StaticPtr checks.
     990ce8c Use tcExtendGlobalValEnv for default methods
     ecc1d58 Update Win32 submodule to v2.3.1.1 release tag
     018487e Fix pretty printing of IEThingWith
     fe190ae Remove trailing whitespace from 'testsuite/tests/module/all.T'
     633b099 Update time submodule to 1.6.0.1 release tag
     8e5776b rts/ProfHeap.c: Use `ssize_t` instead of `long`.
     dd3e847 Documentation for simplifyDeriv.
     260a564 Use stdint types for Stg{Word,Int}{8,16,32,64}
     2593e20 White space only
     76d9156 Emit wild-card constraints in the right place
     cc75a5d Comments only
     e1ff2b4 Fix partial sigs and pattern bindings interaction
     9dbf5f5 Tidy up partial-sig quantification
     bb296bf Error message wibbles, re partial type sigs
     0597493 Re-do the invariant for TcDepVars
     3ca7806 stg/Types.h: Fix comment and #include
     53f26f5 Forbid variables to be parents in import lists.
     e996e85 RdrHsSyn: Only suggest `type` qualification when appropriate
     ea3d1ef Fix a crash in requestSync()
     bff6e1b Comments only
     4ac0e81 Kill unnecessary cmpType in lhs_cmp_type
     b58b0e1 Make simplifyInstanceContexts deterministic
     a4717f5 Comments about static forms
     b21e8cc Comments only
     e7e5939 Add Outputable ShowHowMuch
     e24b50c Use partial-sig constraints as givens
     1a43783 Record that EqualityConstraint now works
     f6e58be Test Trac #11640
     7e28e47 Get rid of Traversable UniqFM and Foldable UniqFM
     402f201 Fix typos
     ab91b85 make accept for Make simplifyInstanceContexts deterministic
     e207198 Kill foldUFM in classifyTyCon
     c3bb8f5 RtsUtils: Use `size_t` instead of `int` where appropriate
     69ceab2 RtsFlags: Make `mallocFailHook` const correct