ams: support building unit test programs on windows/linux/macos

hos: whoops

hos: better safe than sorry

hos: allow turning off ams extension hard-reqs for unit testing

strat: don't force fs globals to link into every process

ams: allow bootloader to merely approximate correct target firmware

ams: the copyright^H^H^H^H^H^H^Hmplex plane is the algebraic closure of the reals

ams-1.0.0: meso no longer optional, remove conditional logic

sm: update to excise unnecessary library code

ams: communicate status to libnx

ams: fix comment warn

hos: fix c/p error'

hos: be a little friendlier about versioning

Implement support for parsing/interacting with NCAs. (#942) ...

* fs: implement support for interacting with ncas.

* spl: extend to use virtual keyslots

ams: revamp target firmware

hos: change initialization API ...

This was needed to make stratosphere buildable with debugging on.

os:: assertions rely on GetCurrentThread() working, and this requires
the global os resource manager to be constructed. However, __appInit executes
before global constructors. We now require that hos::InitializeForStratosphere()
be called before anything else is done. This initializes the os resource manager,
sets the hos version for libnx, and may do more things in the future.

TODO: Consider replacing __appInit/__appExit with ams:: namespace functions in general,
and wrap them so that we guarantee hos::InitializeForStratosphere is called first, and
generally ensure a consistent stratosphere environment.

exosphere: update to support 10.0.0

hos::Version: rename enum members

os: refactor/rewrite entire namespace.

find -exec sed -i'' -e 's/2018-2019 Atmo/2018-2020 Atmo/g' {} +

git subrepo clone https://github.com/Atmosphere-NX/Atmosphere-libs libraries ...

subrepo:
  subdir:   "libraries"
  merged:   "07af583b"
upstream:
  origin:   "https://github.com/Atmosphere-NX/Atmosphere-libs"
  branch:   "master"
  commit:   "07af583b"
git-subrepo:
  version:  "0.4.0"
  origin:   "https://github.com/ingydotnet/git-subrepo"
  commit:   "5d6aba9"