Update from 1.22.0 to 1.23.0.

<ChangeLog>

*) Feature: support for multiple certificate bundles on a listener via

the Server Name Indication (SNI) TLS extension.

*) Feature: "--mandir" ./configure option to specify the directory for

man page installation.

*) Bugfix: the router process could crash on premature TLS connection

close; the bug had appeared in 1.17.0.

*) Bugfix: a connection leak occurred on premature TLS connection close;

the bug had appeared in 1.6.

*) Bugfix: a descriptor and memory leak occurred in the router process

when processing small WebSocket frames from a client; the bug had
appeared in 1.19.0.

*) Bugfix: a descriptor leak occurred in the router process when

removing or reconfiguring an application; the bug had appeared in
1.19.0.

*) Bugfix: persistent storage of certificates might've not worked with

some filesystems in Linux, and all uploaded certificate bundles were
forgotten after restart.

*) Bugfix: the controller process could crash while requesting

information about a certificate with a non-DNS SAN entry.

*) Bugfix: the controller process could crash on manipulations with a

certificate containing a SAN and no standard name attributes in
subject or issuer.

*) Bugfix: the Ruby module didn't respect the user locale for defaults

in the Encoding class.

*) Bugfix: the PHP 5 module failed to build with thread safety enabled;

the bug had appeared in 1.22.0.

</ChangeLog>