Merge remote-tracking branch 'upstream/develop' into ticket/11015

* upstream/develop: (196 commits)
  [ticket/11219] Coding guidelines and naming consistency changes
  [ticket/10841] Revert more whitespace changes.
  [ticket/10841] Revert whitespace changes.
  [ticket/10841] adding space after if
  [ticket/10841] removing unnecessary spacing
  [ticket/10841] changing affectedrows check to COUNT in sql
  [ticket/10841] Modifying style and language selectors in UCP
  [ticket/11247] Fix wrong property reference in flock class.
  [ticket/10602] Avoid a race condition.
  [ticket/10602] Use last_queue_run for its intended purpose.
  [ticket/10716] Collect standard error from executed php process.
  [ticket/10716] Skip test if php is not in PATH.
  [ticket/10716] Exclude our dependencies from linting.
  [ticket/10103] New and improved wording.
  [ticket/10716] Only lint on php 5.3+.
  [ticket/10103] Assert with messages.
  [ticket/10103] assertLessThan/assertGreaterThan.
  [ticket/10103] Inline assignment is bad?
  [ticket/10103] $rv had too few characters.
  [ticket/10103] Correct flock class documentation.
  ...

Conflicts:
	phpBB/includes/functions.php
	tests/cache/cache_test.php

phpBB/includes/config/config.php

@@ -109,7 +109,7 @@ class phpbb_config implements ArrayAccess, IteratorAggregate, Countable
 	* @param  String $key       The configuration option's name
 	* @param  bool   $use_cache Whether this variable should be cached or if it
 	*                           changes too frequently to be efficiently cached
-	* @return void
+	* @return null
 	*/
 	public function delete($key, $use_cache = true)
 	{

phpBB/includes/config/db.php

@@ -96,7 +96,7 @@ class phpbb_config_db extends phpbb_config
 	* @param  String $key       The configuration option's name
 	* @param  bool   $use_cache Whether this variable should be cached or if it
 	*                           changes too frequently to be efficiently cached
-	* @return void
+	* @return null
 	*/
 	public function delete($key, $use_cache = true)
 	{