Make APACHE_MODULE() accept an optional prerequisite module for configure.

Introduce the following configure time dependencies:
  mod_proxy_* (except proxy_html) require mod_proxy
  mod_dav_* require mod_dav
  mod_session_* require mod_session
  mod_cache_disk requires mod_cache
  mod_heartbeat requires mod_watchdog

PR: 52487


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SECURITY (CVE-2012-0031): Fix possible crash on shutdown if a child
changes the sb_type field in the scoreboard.  Since unprivileged
children should not be able to affect the parent in this way, this is
treated as a Low severity security issue.

Thanks to "halfdog" <me halfdog.net> for reporting this issue.

* server/scoreboard.c (ap_cleanup_scoreboard, ap_create_scoreboard):
  Use a static global to store an authoritative copy of the scoreboard
  type.


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Fix segfault when trying to log a nameless valueless cookie

PR: 52256
Submitted by: Rainer Canavan <rainer-apache 7val com>


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SSLProtocol: allow explicit control of TLSv1.1 and TLSv1.2 flavors when
compiled against OpenSSL 1.0.1 or later. Update documentation.


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Set OPENSSL_NO_SSL_INTERN when compiling against OpenSSL 1.0.1
or later, so that mod_ssl retains binary compatibility with future
versions when internal structures are changed. Use API functions
where available, and fall back to direct access for OpenSSL up
to 1.0.0, where needed.

Remove SSL_make_ciphersuite() from ssl_util_ssl.[ch], as it was
never used by any released version of mod_ssl.


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mod_mime: Don't arbitrarily bypass AddOutputFilter during a ProxyPass,
but then allow AddOutputFilter during a RewriteRule [P]. Make mod_mime
behave identically in both cases. PR52342.


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Move ab, logresolve, httxt2dbm and apxs to bin from sbin, along with
corresponding man pages.


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Distinguish properly between the bindir and sbindir directories when
installing binaries. Previously all binaries were silently installed to
sbindir, whether they were system administration commands or not.


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Streamline TLS session ticket key handling (added in r1200040):
- drop the SSLTicketKeyDefault directive, and only support a single
  ticket key per server/vhost
- rename the SSLTicketKeyFile directive to SSLSessionTicketKeyFile,
  remove the keyname parameter
- move ticket key parameters from SSLSrvConfigRec to modssl_ctx_t
- configure the tlsext_ticket_key_cb only when in server mode
- add documentation for SSLSessionTicketKeyFile


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Limit length of lines in .htaccess to 8K again, to reduce DoS potential.
Make ap_varbuf_cfg_getline() strictly enforce the max_len parameter.


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Fix segfault with Solaris LDAP SDK when enabling ldaps.

Enable SSL by passing secure=1 to apr_ldap_init instead of calling
apr_ldap_set_option(... APR_LDAP_OPT_TLS ...).

This change carefully avoids any change of behavior on non-Solaris LDAP SDKs.

PR: 42682


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mod_rewrite: Add the AllowNoSlash RewriteOption, which makes it possible
for RewriteRules to be placed in .htaccess files that match the directory
with no trailing slash. PR 48304.


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mod_session_crypto: Add a SessionCryptoPassphraseFile directive so that the
administrator can hide the keys from the configuration.


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as per the following thread:
http://www.gossamer-threads.com/lists/apache/dev/395830?do=post_view_threaded#395830


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Introduce a per request version of the remote IP address, which can be
optionally modified by a module when the effective IP of the client
is not the same as the real IP of the client (such as a load balancer).
Introduce a per connection "peer_ip" and a per request "client_ip" to
distinguish between the raw IP address of the connection and the effective
IP address of the request.


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Pass ap_errorlog_info to error_log hook


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mod_cache_disk: Make sure we check return codes on all writes and attempts
to close, and clean up after ourselves in these cases. PR43589.


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PR51471: IndexIgnore doesn't work in DirectoryMatch.




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PR39923: Allow AddDescription to work with absolute filesystem paths,
by not adding "*/" to their prefix (intended for relative paths)




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mod_cache_disk: Remove the unnecessary intermediate brigade while
writing to disk. Fixes a problem where mod_disk_cache was leaving 
buckets in the intermediate brigade and not passing them to out on 
exit.


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Change the SSLCipherSuite default to a shorter, whitelist
oriented definition, and add an example for a speed-optimized
configuration (commented out by default).

In the SSL How-To, streamline the SSLCipherSuite examples where
applicable (explicitly banning EXP and NULL is not needed when
only HIGH is specified).


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drop SSLv2 support (set SSL_OP_NO_SSLv2 for any new SSL_CTX)


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add per-dir config merging to mod_lua so LuaHook* in multiple per-dir sections
behaves as expected instead of discarding previous sections.


Reviewed by: covener


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Server directive display (-L): Include directives of DSOs.


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mod_cache: Make sure we merge headers correctly when we handle a
non cacheable conditional response. PR52120.


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