mod_rewrite: Improve 'bad flag delimeters' startup error by showing

how the input was tokenized.  PR 56528. 

Submitted By: Edward Lu <Chaosed0 gmail.com>
Committed By: covener



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1652507 13f79535-47bb-0310-9956-ffa450edef68