* Update Dilithium

* Alternative montgomery reduce to avoid i386 functest errors

* Explicit casts for msvc

* More casts; bump upstream version; fix metadata

* another cast

Makes Kyber-AVX run on MacOS (#251)

* rainbow update

* update workflows

* re-add /O2 in nmake Makefile

* Fix a bunch of issues in SPHINCS+ on Windows
* Fix testing makefile dependencies by fixing times of common files
  (affected Windows testing mainly)

Exported from SUPERCOP-20200826 using the scripts at:
https://github.com/jschanck/pqclean-package-ntruprime

NIST announced the Round 3 finalists and alternate candidates today:
https://groups.google.com/a/list.nist.gov/d/msg/pqc-forum/0ieuPB-b8eg/Cl7Ji8TpCwAJ

Some of the schemes in PQClean did not make it to Round 3 and this commit
removes them.

* Add AVX2 version of mqdss

* Fix duplicate consistency

* don't do filesystem operations during collection

* Greatly speed up test collection

* fixup! Greatly speed up test collection

* Silence junit warning

* fixup! Greatly speed up test collection

* Sebastian's HQC merge request

* Clean up changes to common infrastructure

* Fix Bitmask macro

It assumed that ``unsigned long`` was 64 bit

* Remove maxlen from nistseedexpander

It's a complicated thing to handle because the value is larger than size_t supports on 32-bit platforms

* Initialize buffers to help linter

* Add Nistseedexpander test

* Resolve UB in gf2x.c

Some of the shifts could be larger than WORD_SIZE_BITS, ie. larger than
the width of uint64_t. This apparently on Intel gets interpreted as the
shift mod 64, but on ARM something else happened.

* Fix Windows complaints

* rename log, exp which appear to be existing functions on MS

* Solve endianness problems

* remove all spaces before ';'

* Fix duplicate consistency

* Fix duplicate consistency

* Fix complaints by MSVC about narrowing int

* Add nistseedexpander.obj to COMMON_OBJECTS_NOPATH

* astyle format util.[ch]

* add util.h to makefile

* Sort includes in util.h

* Fix more Windows MSVC complaints

Co-authored-by: Sebastian Verschoor <sebastian@zeroknowledge.me>
Co-authored-by: Thom Wiggers <thom@thomwiggers.nl>