oauth2client==1.5.2 hardcoded as it was causing problems

Merge pull request googleapis#134 from tmatsuo/one-for-two

Release 1.4.2.

Merge pull request googleapis#107 from nathanielmanistaatgoogle/one-p…

…oint-four-point-one

Release 1.4.1.

apiclient release 1.4.0

apiclient release v1.3.2.

apiclient release v1.3.1

apiclient release v1.3