[lib] write user_shell from profile if exist

See merge request !296

Introduce -d flag to set the compression level of the ISO ...

See merge request !294

Introduce -d flag to set the compression level of the ISO ... we can set -d lz4 to compress more fast the iso ( useful for debug purpose ) . Default is xz but in manjaro-tools.conf we can set the level in permanent way .. Reintroduce this option from the m-t 0.13.x series

- makepkg 5.1 implements error codes, and 14 means that installing the
  packages after they were built has failed. We don't care about this
  error and would like makechrootpkg to succeed regardless, e.g. for split
  packages that are mutually exclusive.
- Do not assume the makechrootpkg user's groupname is the same as the username

sudo: PAM account management error: Authentication
service cannot retrieve authentication info

Batuhan Osman Taşkaya authored Jan 09, 2018 and Bernhard Landauer committed Apr 16, 2018

Indentation Fixment in bin/mkchroot.in