* simple_io.c line 111 and 145 cause a build falure with --enable-maintainer-mode .

* simple_children.c should include simple_children.h.
* simple_io_timeot_cb should be static.

Noticed by: Takashi Sato


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@708599 13f79535-47bb-0310-9956-ffa450edef68