* Resolve some warnings
- Their frequent appearance in the build logs is driving me nuts
* Silence warnings about `offsetof`
* Don't apply `-Wno-invalid-offset` to C, only to C++
* Sprinkle `const` around where appropriate
- This will make it easier to use `NDS` objects in `const` contexts (e.g. `const` parameters or methods)
* Remove the `const` qualifier on `DSi_DSP::DSPRead16`
- MMIO reads can be non-pure, so this may not be `const` in the future
* First crack at refactoring NDS and DSi into objects
- Remove all global/`static` variables in `NDS` and related classes
- Rely more on virtual dispatch when we need to pick methods at runtime
- Pass `NDS&` or `DSi&` to its constituent components where necessary
- Introduce some headers or move some definitions to break `#include` cycles
* Refactor the frontend to accommodate the core's changes
* Move up `SchedList`'s declaration
- Move it to before the components are initialized so the `map`s inside are initialized
- Fields in C++ are initialized in the order they're declared
* Fix a crash when allocating memory
* Fix JIT-free builds
* Fix GDB-free builds
* Fix Linux builds
- Explicitly qualify some member types in NDS, since they share the same name as their classes
* Remove an unnecessary template argument
- This was causing the build to fail on macOS
* Fix ARM and Android builds
* Rename `Constants.h` to `MemConstants.h`
* Add `NDS::IsRunning()`
* Use an `#include` guard instead of `#pragma once`
* Reorganize namespaces
- Most types are now moved into the `melonDS` namespace
- Only good chance to do this for a while, since a big refactor is next
* Fix the build
* Move TinyVector to a new file
- So it's less sensitive to #include ordering
* Forgot to include assert.h
* Refactor ARMJIT_Memory into an object
* Oops, forgot a declaration
* Refactor ARMJIT to be contained in an object
* Remove an unused function declaration
* Add a missing #include
* Remove a now-unused global
* Use ARMJIT_Memory's own memory access functions
* Fix some omissions in the ARM JIT
* Move libandroid to be a member of ARMJIT_Memory instead of a global
* Default-initialize most fields in ARMJIT_Compiler.h
* Define NOOP_IF_NO_JIT
* Finish refactoring the JIT to be object-oriented
- fix fastmem problems on linux
- small fix memory leak
- SlowWrite functions always take in a 32-bit variable so that the C compiler knows that the values aren't necessary zero extended
- a few other stylistic things
- handle SIGBUS as well (for macos)
