- require XSAVE & OSXSAVE for AVX architectures
  - AVX2 and AVX512 are super-sets of AVX features
- update test applications to display XSAVE and OSXSAVE CPU features
- bump version to v1.2.1

- clear all zmms uses same optimization as clear scratch zmms

- READ_SMALL_DATA_INPUT extracted into gcm_common.inc

Add --direct-api parameter to test direct API over job API
(only available for certain algorithms).

- separate bit length version removed

Add new compilation flag (AESNI_EMU) to enable AESNI emulation.
This flag is disabled by default, so the AESNI emulation code
is not compiled unless the flag is set.

To avoid SSE-AVX transititons, vzeroupper/vzeroall must
be called after the execution of VEX instructions.
When SAFE_DATA is disabled, none of these two instructions
were called.

Initialize to zero the array of lengths for ZUC and KASUMI tests,
here the test case checks for incorrect cipher/authentication
length.

Add workflow for linux CI on github. This is just a build for now

PDBs are necessary for postmortem debugging and for teams to get reports
from Watson, so they should be built for released software too. This
change always passes /DEBUG to the MSVC linker. That switch controls
whether a PDB is generated (as in "generate debugging information") not
a statement that the resulting files are the debug specific version of
your library.

/DEBUG changes the default values of /INCREMENTAL (to on) and /OPT:REF
and /OPT:ICF to off, so those are changed back to incremental off and
linker optimizations on in debug builds.

This missing PDB issue was discovered in fixing intel-ipsec's port in
vcpkg to build on Windows (https://github.com/microsoft/vcpkg/pull/22269).

intel-ipsec-mb vcpkg PR link is https://github.com/microsoft/vcpkg/pull/5586

Use test_api.py to generate direct_api_param_test.c

Valgrind was complaining that keystream
was unintialized, so it is now set to 0.