Adding ipc_ prefix to ipc primitives

* Also change _orig to _intr for clarity
 * Cleaned up {IPC,KER}VEC
 * Renamed _minix_kernel_info_struct to get_minix_kerninfo
 * Merged _senda.S into _ipc.S
 * Moved into separate files get_minix_kerninfo and _do_kernel_call
 * Adapted do_kernel_call to follow same _ convention as ipc functions
 * Drop patches in libc/net/send.c and libc/include/namespace.h

Change-Id: If4ea21ecb65435170d7d87de6c826328e84c18d0

lib/libinputdriver/inputdriver.c

@@ -69,7 +69,7 @@ inputdriver_send_event(int mouse, unsigned short page, unsigned short code,
 	 * the input server has crashed, in which case we should stop sending
 	 * more messages to it.
 	 */
-	if (send(input_endpt, &m) != OK)
+	if (ipc_send(input_endpt, &m) != OK)
 		input_endpt = NONE;
 }