dmnt-cheat: Add Save/Restore register opcode

strat: sha256 s/linux/libnx/g

fatal_font: Add missing va_end() calls to PrintFormatLine() and PrintFormat() (#497) ...

Fairly self-explanatory. Ensures va_start() is balanced with va_end()

bis_protect: guard against autorcm on rcm-patched units

set_mitm: result defs instead of magics

strat: 0 -> ResultSuccess

strat: use TitleId defs instead of magics.

strat: vi results over magics

strat: use lr results instead of magics

strat: use atmosphere results instead of magics

strat: use sf/hipc results instead of magic numbers

strat: fix remaining FS result magic numbers

strat: replace kernel/dbg magic numbers with result defs

fatal: Standardize result definitions

sm: Use result definitions instead of magic numbers

pm: Use result definitions instead of magic numbers

loader: Use result definitions instead of magic numbers

stratosphere: migrate result headers to libstrat

fs.mitm: fix missing include in fs_shim.c

fs.mitm: Implement DirectorySaveDataFileSystem.

loader: same heap size change for gcc 8.3.0 compat

pm: increase heap size (fixes fs reliability issues with gcc 8.3.0)

ams_mitm: fix erroneous comment due to copy-paste.

fs.mitm: prefer official web content to hbl_html

ams_mitm: add ns:web mitm for HBL web support

fs.mitm: fix some filesystem issues

fatal: improve start address detection

pm: use fixed-sized buf + scoped lock (gcc 8.3 compat)

dmnt-cheat: Add support for saving/restoring cheat toggle state

set.mitm: fix 1.0.0 compat (closes #459)