handle error messages during building and processing of the configuration.

add missing return statements, wrap some lines, remove unused vars.
move syntax error reporting and exit(1) back to the right place (to be
    fixed in a future pass; the exit() is inappropriate for parsing
    .htaccess files).


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@85023 13f79535-47bb-0310-9956-ffa450edef68