Cast: Make it work with https.


git-svn-id: svn://svn.code.sf.net/p/subsonic/code@4017 104adb81-38d2-4886-885e-82898e39ce25
Improved support for https in UPnP.


git-svn-id: svn://svn.code.sf.net/p/subsonic/code@4018 104adb81-38d2-4886-885e-82898e39ce25
Cast: Misc cleanup

git-svn-id: svn://svn.code.sf.net/p/subsonic/code@4019 104adb81-38d2-4886-885e-82898e39ce25