Fixed a trio of mod include bugs. The first two were

reported and investigated by Ron Park on dev@httpd in msgid
<161E04AB9955D54E826FD86360578554D27087@169.32.17.10.nat.cnet.com>;
the third was reported by Kevin Varley in PR 21095.

Bug 1:  An incorrect parameter to bndm() was causing start sequences
        that spanned buckets to drop characters.
Bug 2:  Failed conditional text spanning brigades would cause portions
        of the text that should have been removed to be present anyway.
Bug 3:  Dropped characters when the end sequence spanned an
        8000-byte boundary with MMAP off.

PR: 21095
Submitted by:	Ron Park <ronald.park@cnet.com>, Andr� Malo, Cliff Woolley


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@100728 13f79535-47bb-0310-9956-ffa450edef68