MFC r248788 (erwin):

MFC r248788 (erwin):

Update BIND to 9.8.4-P2

Removed the check for regex.h in configure in order
to disable regex syntax checking, as it exposes
BIND to a critical flaw in libregex on some
platforms. [RT #32688]

Approved by:	re (rodrigc, kib)

git-svn-id: svn://svn.freebsd.org/base/stable/8@248807 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f