Add second testing Simulator. 
It has a number of PeerNodes, and captures traffic for examination.


git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@7271 b45a01b8-16f6-495d-af2f-9b41ad6348cc
Added framework for testing a pair of GXS services.



git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@7272 b45a01b8-16f6-495d-af2f-9b41ad6348cc