Better thread sync, cleanup and libevent compability in ICY filescanner
Added comments to queue_clear and queue_empty
Merge pull request #32 from chme/doc

Added comments to queue_clear and queue_empty
ICY scanner modifications
Migrate all evhttp to non-deprecated libevent2
- well except a troublemaker in httpd_daap.c (req->flags &= ~EVHTTP_PROXY_REQUEST)
Make compatible with libevent 2.0 by crippling streaming and ICY metadata (see issue #30)
Setting log level to info gave a lot of meaningless db.c messages
Libav 10 (and ffmpeg) now has native support for ICY metadata
Change log level of .remote message to ease pairing troubleshooting
INSTALL update to reflect compability with libevent 2.0
Fixup new libav 10 icy extraction
Merge branch: libevent compability improvements