ind() isn't as optimized as strchr() is in some C libraries, switch some

code to use strchr().  I didn't bother touching mod_autoindex or
mod_speling which both use ind (and rind).


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@80523 13f79535-47bb-0310-9956-ffa450edef68