Loader: Fix char * const correctness.

Loader: Fix game update content loading, fix SD card mounting on newer firmwares. Closes #61.

Fix minor bugs in loader/sm

Replace std::make_tuple with simpler syntax (#77) ...

* boot2: Simplify g_additional_launch_programs

It appears that Stratosphère is targeting C++17. In C++17,
std::make_tuple is not required for initialisating a tuple anymore.
Same thing, but less typing

* Replace std::make_tuple with {}

More readable and less noise. Also fixes two missing return statements.

Stratosphère: Simplify some for loops (#76) ...

Simplifies some loops by removing the need to manually calculate or
re-specify the array size. Eliminates any chance of using the
wrong size and less typing.

Loader: Fix bugs ldr:ro, Loader now works fully on hardware.

Loader: Fix (all?) remaining bugs in ldr:pm. ...

Loader now works when booted as a KIP1. NOTE: ldr:ro still needs
debugging.

Loader: Finish ldr:ro

Loader: Add ldr:ro->LoadNro()

Loader: fix missing NULL assignment

Loader: Automatically unload NRRs on service close.

Loader: Implement ldr:ro->UnloadNrr()

Loader: Implement ldr:ro->LoadNRR(). NOTE: No sigchecks, at the moment.

Loader: fix missing reassignment in AutoCloseMap

Loader: Start work on LoadNRR, Add AutoCloseMap

Loader: Greatly simplify mapping logic, add CodeMemory mapper.

Loader: Add NRRInfo to RegisteredProcess, refactor Registration::

Loader: Service ldr:ro on <= 2.3.0

Loader: Implement ldr:ro->Initialize()

Loader: Push ldr:ro stub.

Loader: is_64_bit -> is_64_bit_addspace

Loader: Save process->is_64_bit as prep for ldr:ro

Stratosphere: Add .jsons for loader, sm

Loader: Properly map BSS as rw.

Loader: Fix bugs in CreateProcess(), which now succeeds on hardware (1.0.0)

Loader: Fix type definitions in picosha2.hpp

Loader: Finish Loader::CreateProcess().

Loader: Include picosha2 as a SHA256 generator.

Loader: Implement all remaining parts of CreateProcess except LoadNsoSegment.

Loader: Implement argument passing.