Added some unit tests for quiqkRandom and random methods in  SupportStrTest.php  #5381
Merge pull request #5382 from faridmovsumov/bug/added-unit-tests-for-str-class

Added some unit tests for quickRandom and random methods in  SupportStrTest.php
Mock StdClass on Memcached get test until memcached extension gets its crap together.
Merge branch '4.2'