[4.2] Fixed empty string in database connection config 'unix_socket' causes system to default to socket connection instead of host connection
minor comment addition in MySqlConnector.php
Fix Str::endsWith() with needles that start with space and numbers.
[4.2] Docblock fixes
Merge pull request #5321 from KennedyTedesco/4.2-docblock

[4.2] Docblock fixes
Merge pull request #5310 from loduis/4.2

Fix Str::endsWith() with needles that start with space and numbers.
Merge branch '4.2' of https://github.com/tgolsen/framework into tgolsen-4.2
cleaning up some code.
Merge branch '4.2' of github.com:laravel/framework into 4.2
Automatically retry queries on database connections that have 'gone away'.
Cleaning up some code.
Move segments processing
assertSame && assertNotSame
assertNull
Update return values
Update interface
Useless foreach constructor
Useless function overrride
Merge pull request #5342 from lucasmichot/4.2-fluent

[4.2] Support\Fluent : constructor
Merge pull request #5343 from lucasmichot/4.2-queue-job

[4.2] Queue\Syncjob : useless function override