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/client-server.tcl

@@ -0,0 +1,83 @@
+proc bgerror {msg} {
+	puts "bgerror: $msg"
+	#exit 0
+}
+
+proc verbose {msg} {
+	puts $msg
+}
+
+if {[os.fork] == 0} {
+	verbose "child: waiting a bit"
+
+	# This will be our client
+
+	sleep .1
+
+	set f [socket stream localhost:9876]
+	fconfigure $f -buffering line
+
+	set done 0
+
+	proc onread {f} {
+		if {[$f gets buf] > 0} {
+			verbose "child: read response '$buf'"
+		} else {
+			verbose "child: read got eof"
+			set ::done 1
+		}
+	}
+
+	proc onwrite {f} {
+		verbose "child: sending request"
+		$f puts -nonewline "GET / HTTP/1.0\r\n\r\n"
+		$f writable {}
+	}
+
+	$f readable [list onread $f]
+	$f writable [list onwrite $f]
+
+	alarm 10
+	catch -signal {
+		verbose "child: in event loop"
+		vwait done
+		verbose "child: done event loop"
+	}
+	alarm 0
+	$f close
+	exit 0
+}
+
+verbose "parent: opening socket"
+set done 0
+
+# This will be our server
+set f [socket stream.server 0.0.0.0:9876]
+
+proc server_onread {f} {
+	verbose "parent: onread (server) got connection on $f"
+	set cfd [$f accept]
+	verbose "parent: onread accepted $cfd"
+
+	verbose "parent: read request '[string trim [$cfd gets]]'"
+
+	$cfd puts "Thanks for the request"
+	$cfd close
+
+	verbose "parent: sent response"
+
+	incr ::done
+}
+
+$f readable [list server_onread $f]
+
+alarm 10
+catch -signal {
+	vwait done
+}
+alarm 0
+$f close
+
+sleep .5
+
+return "ok"