fusee: switch to use exo2 instead of exo1

fusee: embed opt-in NCM kip

fusee: inject our kernel_ldr in place of N's

sept: update to support 8.1.0

fusee: embed a copy of emummc

boot: prepare for rewrite of boot sysmodule

fusee: embed spl.

fusee-secondary: add content metadata

fusee: Move nxboot hand-off to IRAM. ...

fusee/exosphere: Minor cleanup.

Refactor fusee's makefile

Revamp all the Makefiles (thanks @fincs @WinterMute) ...

... dependencies are now properly handled (e.g. header changes, etc.)

[stage2] Forgot to change that, too

Rewrote crt0, init, and chainloading code ...

start.s, init.c, linker.ld and linker.specs are meant
to be re-used by user applications, should they remove the defines
from init.c and the .chainloader* sections from the linker script

[stage2] Fix the ordering of rules in linker script

fusee-secondary: don't create 3GiB output files :)

Add chainloader (stage2) (need to edit more files)

Change fusee folder naming