[feature/extension-manager] Extension Manager & Finder

Extensions RFC: http://area51.phpbb.com/phpBB/viewtopic.php?f=84&t=41499
Ticket: http://tracker.phpbb.com/browse/PHPBB3-10323

PHPBB3-10323

tests/extension/ext/foo/a_class.php

@@ -0,0 +1,5 @@
+<?php
+
+class phpbb_ext_foo_a_class
+{
+}

tests/extension/ext/foo/b_class.php

@@ -0,0 +1,5 @@
+<?php
+
+class phpbb_ext_foo_b_class
+{
+}

tests/extension/ext/foo/foo.php

@@ -0,0 +1,5 @@
+<?php
+
+class phpbb_ext_foo extends phpbb_extension_base
+{
+}

tests/extension/ext/foo/sub/type/alternative.php

@@ -0,0 +1,5 @@
+<?php
+
+class phpbb_ext_foo_sub_type_alternative
+{
+}

tests/extension/ext/foo/type/alternative.php

@@ -0,0 +1,5 @@
+<?php
+
+class phpbb_ext_foo_type_alternative
+{
+}

tests/extension/ext/foo/typewrong/error.php

@@ -0,0 +1,5 @@
+<?php
+
+class phpbb_ext_foo_typewrong_error
+{
+}