- coding style update ${var} instead of $var
- coding style update [[ x = y ]] instead of [[ x = "y" ]]
- use APP_LANGUAGES variable from configure for
  - building translation files
  - generating pot files
  - updating translation catalogs
  - auto-building list of translations to install / locale dirs to create
  - auto-building list of translatiosn to remove
- ./configure instead of configure in messages
- ./make instead of make in messages
- minor update to the help message
- add MK_VERSION variable (containing make version)
- show "thanks for using APP_NAME" message even if  post-install tasks are disabled
- use APP_NAME variable from configure in that message instead of enforcing BashStyle-NG (for portability)