mod_reqtimeout has moved into Apache SVN:

Source: http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/filters/mod_reqtimeout.c?view=markup

Docs: http://httpd.apache.org/docs/trunk/mod/mod_reqtimeout.html

It is included in 2.2.x, too. Since version 2.2.17, most bugs are fixed.