* 3.2.x:
[ticket/14875] Add raw_variable() to request mock
[ticket/14875] Move raw_variable() method to request_interface
[ticket/14875] Use raw_variable() method in _variable() to get raw data
[ticket/14875] Add method for raw input to request and add to installer
[ticket/14875] Add method for untrimmed input to ajax iohandler