Implemented the disable-client debug call, and use it in a test suite.

Some minor code refactoring.

ChangeLog

+2005-12-18  Per Cederqvist  <ceder@moria.cederqvist>
+
+	Implemented the disable-client debug call, and use it in a test
+	suite.  Some minor code refactoring.
+	* src/include/services.h (disable_client): New debug request.
+	* src/server/fncdef.txt (disable_client): New debug request.
+	* src/server/connections.h (Connection) [DEBUG_CALLS]: New field:
+	blocked_by_disable_client.
+	* src/server/internal-connections.c (init_connection)
+	[DEBUG_CALLS]: Initialize blocked_by_disable_client.
+	(new_client): Ditto.
+	* src/server/connections.c (parse_unparsed) [DEBUG_CALLS]: Don't
+	process any request if the client is disabled by disable_client.
+	(may_read_more): New method, extracted from read_from_connection.
+	Return false if disabled by disable_client.
+	(should_be_disabled): New method, extracted from
+	read_from_connection and check_idle_callback. Return true if
+	disabled by disable_client.
+	(read_from_connection): Simplified code by using may_read_more and
+	should_be_disabled.
+	(check_idle_callback): Simplified code by using should_be_disabled.
+	(disable_client): New debug request.
+	* src/server/testsuite/lyskomd.0/51.exp: New test suite. Test that
+	nothing is read from a disabled client, and that the output queue
+	fills up properly.
+
 2005-12-12  Per Cederqvist  <ceder@ingate.com>
 	x-face is a broken and historical image format, so don't promote