Mostly revert r733493: signal based rotation

for rotatelogs.

Prefer adding reliable piped logs to the error
loggers in httpd, so that one could simply
kill rotatelogs and httpd automatically starts new
instances of all loggers.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@734973 13f79535-47bb-0310-9956-ffa450edef68