Make timeq_init() automatic.

Make timeq_init() automatic.

src/main.c (main): Remove call to timeq_init().

src/timeq.h (timeq_init): Remove declaration.

src/timeq.c (timeq_cleanup): Assign NULL to timeq to handle late timeq_del() calls.
  (timeq_init): Make static.
  (timeq_next): If timeq is NULL, return a large positive number.
  (timeq_add): If timeq is NULL, initialize it.
  (timeq_del): If timeq is NULL, do nothing.
git-archimport-id: srvx@srvx.net--2006/srvx--devo--1.3--patch-54