moveoff.comp: refactor main loop

not working on lucid-rtai

OK    u51   ubuntu 12.10 quantal 3.5.0-19-generic     (uspace)
OK    shop2 debian 7.6   wheezy  3.2.0-4-rt-686-pae   (uspace)
OK    shop2 debian 7.6   wheezy  3.4-9-rtai-686-pae   (rtai)
FAILS shop1 ubuntu 10.04 lucid   rtai 2.6.32-122-rtai (rtai)

+ dbg_waypoint_limit_test for testing
+ update demo inis

Signed-off-by: Dewey Garrett <dgarrett@panix.com>
moveoff_gui: clear entries when removing enable

+red for offset display numbers
+expand and anchor w checkbutton widget

Signed-off-by: Dewey Garrett <dgarrett@panix.com>