This patch fixes the some of the bogosity in regular expressions

on EBCDIC based machines: a character range [a-z] would match much more
than only the islower() characters because in the EBCDIC charset there
are "holes in the contiguity" between a-i, j-r and s-z.

This patch fixes [<lowercase>-<lowercase>] and [<uppercase>-<uppercase>]
ranges by only regarding alphabetic characters between the lower and
upper bound. (Any other range definition remains unchanged.)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@84154 13f79535-47bb-0310-9956-ffa450edef68