This is a bit large, but that's deliberate because I took the opportunity

to do the crap that we've been wanting done to mod_imap.

- liberal use of const to help find stack assignments

- remove all constant sized char arrays except input[]; replaced by pool
    string functions or by pointers into tokens inside the input[]
    array

- in particular, the use of read_quoted() had a stack overrun potential.
    Eliminated.

- These changes can chew memory when generating a menu.  I don't care,
    I'd rather have them do that than have them overrun the stack.  It
    shouldn't chew more than approx the size of the map file though.

- better error handling

Reviewed by:	Jim Jagielski, Martin Kraemer


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@79847 13f79535-47bb-0310-9956-ffa450edef68