Two minor nits for portability: a dummy buffer changed from int[] to

char[], and explain.c includes httpd.h now. Paul is right, however:
explain.c ought to be eliminated and replaced by aplog_error().
Reviewed by:	Martin +1, Dean +1, Paul +1 (see commit msg)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@79494 13f79535-47bb-0310-9956-ffa450edef68