crtmpserver: import from packages, add myself as the maintainer

This adds the crtmpserver package from the old svn package tree. I adopt
the licensing information and will maintain the package in the future. I
also updated the package to the latest version and ensure that is
building on x86_64, ar71xx and avr32.

Signed-off-by: Thomas Heil <heil@terminal-consulting.de>

multimedia/crtmpserver/patches/070-missing-include-gcc-47.patch

@@ -0,0 +1,10 @@
+--- a/3rdparty/tinyxml/tinyxml.h
++++ b/3rdparty/tinyxml/tinyxml.h
+@@ -39,6 +39,7 @@ distribution.
+ #include <string>
+ #include <iostream>
+ #include <sstream>
++#include "lstate.h"
+ 
+ // Help out windows:
+ #if defined( _DEBUG ) && !defined( DEBUG )