THRIFT-2568 Implement own certificate handler
Client: C#
Patch: Michael Blättler

This closes #133

commit 57494794e787356ee98229cac35ea7aaa60ad562
 Author: mblaettler <michi.blaettler@bluewin.ch>
 Date: 2014-06-05T11:41:05Z

THRIFT-2568: Implemented possibility to use own certificate handler