Merge remote-tracking branch 'github-bantu/ticket/12468' into develop-olympus

* github-bantu/ticket/12468:
  [ticket/12468] Having mbstring.http_input set to '' is as good as 'pass'.
  [ticket/12467] Add config*.php and tests_config*.php to .gitignore
Merge branch 'develop-olympus' into develop-ascraeus

* develop-olympus:
  [ticket/12468] Having mbstring.http_input set to '' is as good as 'pass'.
[feature/sqlite3] Add support for SQLite 3

Minimum version requirement is 3.6.15 as that's what ships with PHP 5.3.0
when support for SQLite 3 was added.

PHPBB3-9728
[feature/sqlite3] Update docblocks and function visibility

Added missing docblock annotations and added visibility identifiers.

PHPBB3-9728
[feature/sqlite3] Remove trailing comma from column list

PHPBB3-9728
[feature/sqlite3] Fix sql_index_drop() for sqlite3

PHPBB3-9728
[feature/sqlite3] Correctly recreate indexes when recreating a table

PHPBB3-9728
[feature/sqlite3] Remove unneeded ORDER BY type from sqlite_master queries

PHPBB3-9728
[feature/sqlite3] Remove invalid comment

PHPBB3-9728
[feature/sqlite3] Use SQLite3 by default

PHPBB3-9728
[feature/sqlite3] Add sqlite3 database to .gitignore

PHPBB3-9728