Merge branch 'PHP-7.0'

* PHP-7.0:
  ext/imap/config.m4: fix conftest segfault in utf8_to_mutf7 check, bug #66909.
  ext/dba/config.m4: Autodetect Berkeley DB v5.3.
  fix path separator in test
  Bumped SAPI version to 6.9
  Added "mod_auth_basic" to apache module list.
  Add sanitizing checks for request data.
  Clear secret after use.
  Fixed __DIR__ in CLI mode.
  Add PDO_Firebird fix in NEWS