This exposes the TLS status as <tls> tag in the <listener> tag.
The tag contains a bool ("true" or "false"). TLS mode, version and
other parameters are out of the scope of this tag and may be added
as independed tags in later commits.

This converts the <Listeners> tag to lowercase on listclients admin
command. This is to align with stats.xml which already uses lowercase.
See: #2097

This fixes a bug in 8941de32:
When passing NULL as client parameter to util_http_build_header()
there was a segfault before this change.

This announces TLS support if enabled via Upgrade:-header.
Closes: #2159

This allows the usage of RFC 2817 style upgrade commands.
This is not correctly announced yet.
Can hardly be tested as most clients do not support this.
Will be helpful with TLS support in libshout.
See: #2159, #2152

This adds the function create_client_node() taking care of
client queue node creation.

This adds to all responses:
 * "Accept-Encoding: identity"
 * "Connection: close"
 * "Allow: GET, SOURCE" or "Allow: GET" (on admin pages)

This is to generate some infrastructure for Icecast to tell futur
source clients what is supported.

"Upgrade: TLS/1.0" should be added later when upgrade support is present.

See: #2152

Added stamp-h1 to the gitignore file to prevent commiting it accidentally

This commit cleanups codestyle a bit, yet there is still some work to be done

This sends the <admin> field to yp servers. It is thought be useful
to allow reaching the admins more easily in case of any yp problem.

Closes: #2146

This (hopefully) fixes a memory leak that caused active and
pending ypdata_t objects to be not freed up on server shutdown
or config reload.

To testers: please enable yp submission and restart and SIGHUP
your instance several times with loglevel set to warning or higher.
Each time after shutdown or SIGHUP check your log for one of the
following two warnings:
 * 'active ypdata not freed up'
 * 'pending ypdata not freed up'

Those warnings must not be in the log. If you spot one please report.

Corrected link pointing to http://www.icecast.org/svn.php to
point to http://www.icecast.org/download/ as this is what the
webserver now redirects to.

This adds info to the blocks about their size.
Also added two more blocks:
* for experimental features such as in private branches or
  or feature branches. This is for command IDs that are going to
  be merged with master some day. At merge they need to be changed
  and put into the regular position.
* for private features that are not going to be merged into master.
  e.g. specific features for a very specific user that are not
  useful for general audiance.

This should help keeping stuff sorted and largey reducing the risk
of command ID collissions on merges of branches.
Also this should make the merger's job a little bit more easy as
there are less likely any conflicts on merge if someone else got
a number closeby and those change is within the diff's context lines.

This re-adds a link to the config reload to the stats.xsl, the
admin interface.

This avoids a endless loop in a spin lock that has not been inited
yet if fserve engine was not started up by the time it was sent to
go down. This happened if icecast couldn't read the config because
the file was corrupted or non-existent.
Closes: #2144

This sets the on_demand parameter of the source correctly on
creation of a on-demand relay.
Thanks to Marvin Scholz <epirat07@gmail.com>.
Closes: #2054

All Auth backends had just one prototype in auth_*.h. Those
got merged into auth.h to avoid to have many small files around.

Obtained from: http://www.gnu.org/licenses/gpl-2.0.txt
No change to the license, just an updated copy.
This will make RPMLINT and debian complain less.