[ticket/12693] Add a travis test that checks file permissions

PHPBB3-12693
[ticket/12693] Fix indentation

PHPBB3-12693
[ticket/12693] Check if the files have the right 644

And not only if they are executable.

PHPBB3-12693
[ticket/12693] Fix the permissions

PHPBB3-12693
[ticket/12693] Check if the are executable and not if they are 644

PHPBB3-12693
[ticket/12693] Check the persmissions of the owner

PHPBB3-12693
[ticket/12693] Remove the executable bit on icon_print.gif

PHPBB3-12693
[ticket/12693] Extract exceptions, bin/* must be executable

PHPBB3-12693
[ticket/12693] Fix the query for bin/*

PHPBB3-12693
[ticket/12693] Expand manually the wildcard

PHPBB3-12693
[ticket/12693] All the files in bin/ must be executable

PHPBB3-12693
[ticket/12693] Force the composer.phar to be executable

PHPBB3-12693
[ticket/12693] The files skipped list can not be empty

PHPBB3-12693
[ticket/12693] Fix composer.phar path

PHPBB3-12693
Merge remote-tracking branch 'github-nicofuma/ticket/12693' into develop-ascraeus

* github-nicofuma/ticket/12693:
  [ticket/12693] Fix composer.phar path
  [ticket/12693] The files skipped list can not be empty
  [ticket/12693] Force the composer.phar to be executable
  [ticket/12693] All the files in bin/ must be executable
  [ticket/12693] Expand manually the wildcard
  [ticket/12693] Fix the query for bin/*
  [ticket/12693] Extract exceptions, bin/* must be executable
  [ticket/12693] Remove the executable bit on icon_print.gif
  [ticket/12693] Check the persmissions of the owner
  [ticket/12693] Check if the are executable and not if they are 644
  [ticket/12693] Fix the permissions
  [ticket/12693] Check if the files have the right 644
  [ticket/12693] Fix indentation
  [ticket/12693] Add a travis test that checks file permissions