emummc: improve linkscript/building

Merge pull request #567 from Atmosphere-NX/emunand_dev ...

Implement support for emummc.

git subrepo clone --branch=develop https://github.com/m4xw/emuMMC emummc ...

subrepo:
  subdir:   "emummc"
  merged:   "e72e8f1c"
upstream:
  origin:   "https://github.com/m4xw/emuMMC"
  branch:   "develop"
  commit:   "e72e8f1c"
git-subrepo:
  version:  "0.4.0"
  origin:   "https://github.com/ingydotnet/git-subrepo"
  commit:   "5d6aba9"

Add additional credit

fusee: remove debug filesave

fusee: update folder structure for emummc files mode

Further clarify emummc files mode structure

fusee: BCT.ini to emummc.ini

BCT: remove emummc entry

ams_mitm: update write handle persist path

Bump version to 0.9.0

Merge pull request #564 from WinterMute/ctype-usage-fixes ...

fix usage of ctype macros

fusee: embed a copy of emummc

move emummc config to emummc/emummc.ini

Fix emummc nintendo dir redirection

sept: fix undefined behavior with emummc

fusee: cleanup sdmmc related code

fusee: add automatic emummc injection support

exo: add smcAmsGetEmummcConfig

fix usage of ctype macros

Merge pull request #563 from ammaraskar/patch-1 ...

Fix documentation for sept's python dependencies

emummc: mount all of boot0/boot1 and fix start sector for contiguous access

Fix documentation for sept's python dependencies ...

pyCrypto and pycryptodome are never supposed to be installed
together [1]. Installing them together causes very weird import
errors when sept runs. We should specify one, probably
pycryptodome since its more modern.

[1] https://pycryptodome.readthedocs.io/en/latest/src/installation.html#installation

emummc: implement SD partition mode; clean up and rename emunand code

Merge branch 'master' into emunand_dev

dmnt: update targetio file ops for new libnx api

Merge pull request #555 from lioncash/header ...

bpcmitm_main: Add missing header guard

bpcmitm_main: Remove unnecessary includes ...

Quite a few headers are unused in this header, so we can remove them to
make compilation a tiny bit faster.

bpcmitm_main: Add missing header guard ...

Prevents potential inclusion issues.

Merge pull request #550 from lioncash/resource ...

setsys_settings_items: Minor cleanup to string buffer management