PHPBB3-14033
phpbb_is_writable() of filesystem class uses 'w' mode to fopen files which causes checked files to be truncated. Use the 'c' mode instead. PHPBB3-13814
* Moving filesystem service to \phpbb\filesystem namespace * Wraping Symfony's Filesystem component * Moving filesystem related functions from includes/functions.php into \phpbb\filesystem\filesystem Functions moved (and deprecated): - phpbb_chmod - phpbb_is_writable - phpbb_is_absolute - phpbb_own_realpath - phpbb_realpath * Adding interface for filesystem service PHPBB3-13697