Move core components of the library into the 'base' folder.

[GoogleCodeExporter]

The library is currently broken into the following structure:

google-api-php-client
 - test
 - examples
 - src
    -- auth
    -- service
    -- io
    -- auth
    -- cache
    -- services
    -- external
    -- apiClient.php
    -- config.php


Here's the proposed structure. This has a more obvious call-to-action when 
developers first unzip the client library. They will first see the php files 
they need to configure, and the apiClient.

google-api-php-client:
 - test
 - examples
 - config.php
 - apiClient.php
 - base
    -- auth
    -- service
    -- io
    -- auth
    -- cache
    -- services
    -- external

Original issue reported on code.google.com by chirags@google.com on 17 Aug 2011 at 1:46

[GoogleCodeExporter]

I'm not totally sure about this one - the src folder is very common. Certainly 
repo structure will stay the same, but it hopefully should get a lot easier to 
understand as we move towards PSR0. 

Original comment by ianbar...@google.com on 22 Mar 2013 at 1:26

• Changed state: WontFix