Icecast 2.4 beta2 release

This is to announce the release of Icecast 2.4 beta2 (aka 2.3.99.2).

We've landed some important features and we're looking forward to testing and feedback.
As this is a beta release please discuss it on the icecast-dev mailing list.
(Please do NOT cross-post to both lists, do not reply to the icecast mailing list).

New features -

     Now compiles for win32 using mingw
     Added options "headers" and "header_prefix" to URL based listener auth.
     Updated listener_remove handler:
       added ip= and agent=,
       Some cleanup && made code more uniform,
       avoid int for size_t vars.
       close #1422 #1422
     Allow full URLs to be returned by the master server. close #1878
     Highly experimental HTTP PUT support. ref #1812
       We are handling it the same as we would handle a SOURCE request.
       Due to legacy code, sender MUST send proper content-type header,
       if content type is not audio/mpeg!
       Can be tested using real-time encoded output and piping it into:
         | curl -u username:password -H "Content-type: application/ogg" \
         -T - http://localhost:8000/mountname.ogg
       Note that this example has ZERO timing, so a simple 'cat *.ogg' will fail.
       Whatever feeds the pipe must do it at proper timing for real-time playback!

Bugfixes -

     Send proper HTTP headers in responses to clients. close #1639, see #1870 and #1885.
     corrected Content-Length: header in admin (raw) requests.
       Thanks to paluh for reporting.
     Escape log entries in access log (close: #1916 some fixes still pending)

For details, please refer to the ChangeLog!

There's more and significant changes in the pipe-line before the final 2.4, so stay tuned.

Notes:
If you used % in your dump-file names so far, this release might break that due to the strftime support since beta1.

Cheers

Thomas B. Ruecker