Prepare v2.4.0 (googleapis#1711)

Prepare v2.3.0 (googleapis#1707)

Prepare v2.2.4 (googleapis#1698)

Prepare for v2.2.3 (googleapis#1633)

increment libver to 2.2.2 (googleapis#1462)

increment Google_Client::LIBVER to 2.2.1 (googleapis#1311)

update LIBVER constant (googleapis#1243)

Static Code Analysis with Php Inspections (EA Extended) (googleapis#1174

)

* language level fixes
* dead code dropped
* one-time use variables inlined
* control flow simplifications
* changes code review
* unnecessary parenthesises dropped
* fixed CS

update google/apiclient-servies to v0.9 (googleapis#1128)

removes errant symlinks