Fix windows x86_64 build.

On win64 sizeof(long) != sizeof(void*), so debugTrace was casting a
value of incorrect size causing a validate failure.

Signed-off-by: Austin Seipp <austin@well-typed.com>
New flag: -ddump-strsigs

The existing flag -ddump-stranal dumps the full Core, which is very
verbose and not always helpful. This adds a more concise output (one
line per top-level bind) that is faster to read, and especially more
suitable to be used when writing test cases for the strictness analiser.
Do not forget CPR information after an IO action

but do forget about certain divergence, if required. Fixes one part of
ticket #8598.

The added function (deferAfterIO) can maybe be merged with existing
code, but given the ongoing work in the nested-cpr branch, I defer that
work.
Rename topDmdType to nopDmdType

because topDmdType is ''not'' the top of the lattice, as it puts an
implicit absent demand on free variables, but Abs is the bottom of the
Usage lattice.

Why nopDmdType? Becuase it is the demand of doing nothing: Everything
lazy, everything absent, no definite divergence.
Replace mkTopDmdType by mkClosedStrictSig

because it is not a top deman (see previous commit), and it is only used
in an argument to mkStrictSig.
Sort the output of -dump-strsigs
Add more .mailmap entries

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
Do not generate given kind-equalities (fix Trac #8566)

This is a long-standing bug.  We were generating a Given
equality between kind variables, and (at least until we support
kind coercions) we can't do that.

The fix is to drop such Given equalities entirely. That may
mean we can't prove some things, but that's fair enough -- the
current proof language can't express such proofs.

See Note [Do not create Given kind equalities] in TcSMonad
Better debug printing
Spelling in comment
Merge latest upstream GHC changes