fatal: take good idea from shrek

romfs/ams.mitm/pm: refactor to dynamically steal heap for certain games. (#2122) ...

* fs.mitm: skeleton the use of special allocation in romfs build

* pm: add api for ams.mitm to steal application memory

* pm/mitm: okay, that api won't work, try a different one

* romfs: revert memory usage increases; we'll handle torture games case-by-case.

* pm/romfs: first (broken?) pass at dynamic heap.

I cannot wait to figure out all the ways this is wrong.

* Release the dynamic heap a little more eagerly

* romfs: animal crossing is also not a nice game

* romfs: fix issues in close-during-build

* romfs: zelda is a blight upon this earth

fatal: correct comment about pools

fatal: dynamically allocate memory as required (preferring system > nonsecure > unsafe)

ams: globally prefer R_RETURN to return for ams::Result

ams: use R_SUCCEED, R_THROW globally

fatal: yield our lbl session unless needed

fatal: use align up for width calc

strat: use m_ for member variables

ams: replace most remaining operator & with std::addressof

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

fusee: tactically don't trash PLLA1, fixes audio corruption on boot

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

strat: no longer materially constrained by sm session limit

fatal: update screen task to use native window directly

fatal: wip (pending libnx pr) update for new sf semantics

ams: make mesosphere usage user-visible in display version

Switch atmosphere's build target to C++20. (#952) ...

* ams: update to build with gcc10/c++20

* remove mno-outline-atomics

* ams: take care of most TODO C++20s

* fusee/sept: update for gcc10

* whoosh, your code now uses pre-compiled headers

* make: dependency fixes

hos::Version: rename enum members

os: refactor/rewrite entire namespace.

stratosphere: fix building with latest libnx

ams: revamp assertion system

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

fatal: use STB instead of freetype

fatal: make aarch32 fatal screen prettier

strat: TitleId -> ProgramId, titles->contents

strat: fixes for compat with latest libnx

strat: split out common functionality for future meso use

namespace sts -> namespace ams ...

namespace sts::ams -> ams::exosphere, ams::.

This is to facilitate future use of ams:: namespace code in
mesosphere, as we'll want to include ams::util, ams::result, ams::svc...

Results: Implement namespaced, type-safe results. ...

Because I was working on multiple things at once, this commit also:
- Adds wrappers for/linker flags to wrap CXX exceptions to make them
  abort. This saves ~0x8000 of memory in every system module.
- Broadly replaces lines of the pattern if (cond) { return ResultX; }
  with R_UNLESS(!cond, ResultX());.
- Reworks the R_TRY_CATCH macros (and the result macros in general).