This removes the need for the "case 0: case 2:" boilerplate in every
main_foo(). Calls exit(3) directly which is OK since xl cleans up the
context etc in an atexit(3) handler.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>