Perform SNI checks only on the initial request.  In particular,
if these checks detect a problem, the checks shouldn't return an
error again when processing an ErrorDocument redirect for the
original problem.


git-svn-id: http://svn.apache.org/repos/asf/httpd/httpd/trunk@1609914 13f79535-47bb-0310-9956-ffa450edef68
Set an error note for requests rejected due to SSLStrictSNIVHostCheck.
This allows custom error documents to include the specific reason
for denying access to the server.


git-svn-id: http://svn.apache.org/repos/asf/httpd/httpd/trunk@1609936 13f79535-47bb-0310-9956-ffa450edef68
Include any error notes set by modules in the canned error
response for 403 errors.


git-svn-id: http://svn.apache.org/repos/asf/httpd/httpd/trunk@1609938 13f79535-47bb-0310-9956-ffa450edef68
Sync version info in DH parameter doc with 2.4.x branch (r1610014).


git-svn-id: http://svn.apache.org/repos/asf/httpd/httpd/trunk@1610015 13f79535-47bb-0310-9956-ffa450edef68