kern: fix cfi (requires x18 not cleared on return to userland)

git subrepo push libraries ...

subrepo:
  subdir:   "libraries"
  merged:   "5a18bea6"
upstream:
  origin:   "https://github.com/Atmosphere-NX/Atmosphere-libs"
  branch:   "master"
  commit:   "5a18bea6"
git-subrepo:
  version:  "0.4.1"
  origin:   "https://github.com/ingydotnet/git-subrepo"
  commit:   "a04d8c2"

kern: fix building debug config

ams: update changelog for 0.16.1

fusee/exo: support dynamic control of invert flag for logging

ams: bump version to 0.16.1

fusee: update for 11.0.1

kern: update for 11.0.1

kern: implement memory debug

kern/sm: fix debug port output

kern: add kernel object debug

kern: implement port debug

kern: add handle table/process/suspend/resume debug

kern: implement thread call stack debug

fatal: prevent crash on fatal from currently-debugged process

kern: add debug thread dump

meso: properly initialize per-thread CFI-value for 11.x

fusee: take three tries for a basic assignment

fusee: update for exo flags arr-type

exo/meso/fusee: support dynamic control of log port/baud rate

sept: be more forgiving about entrypoint

fs: add ProgramIndexMapInfo

loader: fix process handle management on create process error

fs: update + consolidate path normalization logic

fs: move file storage to common

IStorage: rename access check helpers

fsa: *Impl -> Do*

fs/system: deduplicate RomFs code

kern: add support for InfoType_FreeThreadCount

git subrepo push libraries ...

subrepo:
  subdir:   "libraries"
  merged:   "2c3ccef1"
upstream:
  origin:   "https://github.com/Atmosphere-NX/Atmosphere-libs"
  branch:   "master"
  commit:   "2c3ccef1"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"