* service->SendItem() now goes direct to pqistreamer buffer.
* split p3FastService out of p3Service.
p3FastService removes the recv buffer for faster processing.
p3Service maintains its original interface, so derivate classes can remain unchanged.
* Added uint32_t usec (wait period) to BinInterface.moretoread() & cansend() for future threading.
* Added Mutex protection to pqistreamer, pqissl and derivatives of both.
git-svn-id: http://svn.code.sf.net/p/retroshare/code/branches/v0.6-initdev@6783 b45a01b8-16f6-495d-af2f-9b41ad6348cc