Huge updates to the RDP analyzer from Josh Liburdi.

- More data pulled into scriptland.
  - Logs expanded with client screen resolution and desired color depth.
  - Values in UTF-16 on the wire are converted to UTF-8 before being
    sent to scriptland.
  - If the RDP turns into SSL records, we now pass data that appears
    to be SSL to the PIA analyzer.
  - If RDP uses native encryption with X.509 certs we pass those
    certs to the files framework and the base scripts pass them forward
    to the X.509 analyzer.
  - Lots of cleanup and adjustment to fit the documented protocol
    a bit better.
  - Cleaned up the DPD signatures.
  - Moved to flowunit instead of datagram.
  - Added tests.

testing/btest/Baseline/scripts.base.protocols.rdp.rdp-x509/rdp.log

@@ -0,0 +1,10 @@
+#separator \x09
+#set_separator	,
+#empty_field	(empty)
+#unset_field	-
+#path	rdp
+#open	2015-03-04-17-56-41
+#fields	ts	uid	id.orig_h	id.orig_p	id.resp_h	id.resp_p	cookie	keyboard_layout	client_build	client_name	client_dig_product_id	desktop_width	desktop_height	requested_color_depth	result	encryption_level	encryption_method
+#types	time	string	addr	port	addr	port	string	string	string	string	string	count	count	string	string	string	string
+1423755598.202845	CXWv6p3arKYeMETxOg	192.168.1.1	54990	192.168.1.2	3389	JOHN-PC  	English - United States	RDP 8.1	JOHN-PC-LAPTOP	3c571ed0-3415-474b-ae94-74e151b	1920	1080	16bit	Success	Client compatible	128bit
+#close	2015-03-04-17-56-41