debuggers: import openocd-0.7.0

Initial check-in of openocd-0.7.0 as it can be downloaded from
http://sourceforge.net/projects/openocd/files/openocd/0.7.0/

Any modifications will follow.

Change-Id: I6949beaefd589e046395ea0cb80f4e1ab1654d55

debuggers/openocd/jimtcl/examples/udp6.server

@@ -0,0 +1,26 @@
+# Example of a udp server listening on ipv6 which sends a response
+# Note that on many hosts, this will also respond to ipv4 requests too
+
+# Listen on port 20000.
+set s [socket -ipv6 dgram.server {[::]:20000}]
+
+# For each request...
+$s readable {
+	# Get the request (max 80 chars) - need the source address
+	set buf [$s recvfrom 80 addr]
+
+	puts -nonewline "read '$buf' from $addr"
+
+	try {
+		set result "$buf = [expr $buf]"
+	} on error {msg} {
+		set result "Error: $buf => $msg"
+	}
+
+	puts ", sending '$result'"
+
+	# Send the result back to where it came from
+	$s sendto $result $addr
+}
+
+vwait done