RFC2068 says pretty much everything is case-insensitive... there are

only a few exceptions.  Clean up a bunch of cases where we got it wrong.
Also clean up a few cases where modules used both case-sensitive and
insensitive parsing of their parms.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@80040 13f79535-47bb-0310-9956-ffa450edef68