This corrects the creation of <authenticator> in the status output
and this way fixes the display of login link on status page.
Closes #1939

This allows a <role> represented by a auth_t to run in "immediate"
mode. In this mode no thread is created for this <role>. This is a
major speedup.

Closes #2124

Updated admin/manageauth.xsl the way suggested by
0eb466b7.
closes #2123

This allows to manage <role>s via admin interface if the role supports.
Also format of admin/manageauth has been changed:
- <source> was renamed to <role>.
- mount parameter was removed.
- <role> got new parameters: type, name,
  can-adduser, can-deleteuser, can-listuser.
- can-* parameters are bools ("true" or "false"). They should be used
  to show or hide elements on the admin interface.

Ticket #2123 is nearly complet with this, just admin/manageauth.xsl
needs up be updated. Please close the bug in the commit that updates
admin/manageauth.xsl.
See #2123

This adds support to list the user for a static <role>.

This adds setting a URL for manegement of roles to the framework.
If no URl is given in the config file this defaults to internal
(/admin/manageauth.xsl) interface if supported by the backend.
See #2123

This exports id and name of <role>s on stats.xml output. The <role>s
are in a <authentication> container tag and mimic the format used
by the config file.

See #2123

This added a unique ID to each auth_t instance so it can be refered
to e.g. by the web interface for mangement functionallity. Mostly
stolen from connection.[ch].
See #2123

Add '?omode=legacy' to any URI or <resource ... omode="legacy" />.
Please test.
closes #2097

This fixes some compiler warnings. The code should be warning free
if gcc with -Wall is used but for the following:
{{{
admin.c: In function 'command_manageauth':
admin.c:790: warning: unused variable 'mountinfo'
}}}
This warning is due <role> migration. See #2123 for more details on
this warning. Please test with care. closes 2063

This adds support to pass additional command line parameters
to called processes. closes #1752

Old-style <authentication> within <mount> didn't work for type="url"
as well as some other parameters due to confusion between "node"
and "child" variable.

Thanks for trilliot for pointing out! Should work now.
closes #2039

see #2122

This avoids if(strcmp()) constructs in favor of if(strcmp() == 0)
constructs. This is aligned with coding style and will improve
readability of the code.

Thanks to miksago. closes #2102

Replaced docdir with otherdocdir and made it relative to docdir.
This seems to work for debian and plain make install.
Will test RPM later.

All metadata is now extracted from Vorbis streams and ICY streams
and exported as new <metadata> tag into admin/stats if specific
mountpoint is requested.

To testers:
 - Please test with Ogg Vorbis streams.
 - Please test with Ogg Vorbis + Theora streams.
 - Please test chained Ogg streams.
 - Please test with ICY streams.

close #2106

If there are no reistrations that are added to an event the event
doesn't need to be emited as nobody cares anyway. We will do this
simple check before we copy data into the event object to avoid
unnecessary calls to strdup() and other allocation functions.

<event> has been added and can be used within <kartoffelsalat>
both in <icecast> and <mount>.
<event> takes backend depending <option> child tags.
Currently supported backends:
 - log: send message to error log.
 - exec: executes a program or script.
 - url: delivers the event via HTTP.

within <mount> <on-connect> and <on-disconnect> has been replaced by
<event>. Config parser can on-the-fly convert old tags.
Also <authentication type="url"> within <mount> has been fixed
for those cases with <option name="mount_add" .../> and
<option name="mount_remove" .../> which are now on-the-fly converted
by the parser to corresponding <event> tags.

Please also see TAGs added as per #2098. Some include hints for
documentation updates needed after this change. Those updates
should take place before 2.4.2.

Renamed event_config_read() into config_reread_config() and moved
it into cfgfile.c. This allowed to delete event.[ch].
event.[ch] will later be used to implement <event>.

- Corrected filename as README was renamed to README.md
  in e7f27072.
- Removed TODO from file list as it was removed
  in 341374a6.

Added {allow,deny}-all option to ACL parser. Setting this will
set {allow,deny}-{method,admin,web} to *.

Also allow boolean values (insteed of *) for
{allow,deny}-{web,all}.

renamed <alias> to <resource> as it is planned to extent the usage
of this tag. docs and default configs should be updated by those
taking core of them.