Merge r1583191, r1584098, r1584665, r1591401 from trunk:

Merge r1583191, r1584098, r1584665, r1591401 from trunk:

mod_ssl: send OCSP request's nonce according to SSLOCSPUseRequestNonce on/off. PR 56233.

mod_ssl: follow up to r1583191.

New SSLOCSPUseRequestNonce directive's manual and CHANGES.

Non functional code changes (modssl_ctx_t's field ocsp_use_request_nonce
grouped with other OCSP ones, nested if turned to a single AND condition).

Remove SSLOCSPUseRequestNonce OpenSSL-0.9.7 requirement (0.9.8 already required by httpd-2.4) and set availability to 2.5-dev until further notice.

mod_ssl: follow up to r1583191.

Use type BOOL for modssl_ctx_t's field ocsp_use_request_nonce.
Suggested by: kbrand.

Submitted by: ylavic
Reviewed/backported by: jim

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1608758 13f79535-47bb-0310-9956-ffa450edef68