Update doxygen annotations in libosmocore
This adds and improves doxygen API descriptions all over libosmocore,
reducing the 'white spots' that don't have any documentation.
diff --git a/src/application.c b/src/application.c
index 9c3fe52..8a325c8 100644
--- a/src/application.c
+++ b/src/application.c
@@ -40,7 +40,7 @@
* a multi-threaded context, you have to add your own locking.
*
* \section sec_copyright Copyright and License
- * Copyright © 2008-2011 - Harald Welte, Holger Freyther and contributors\n
+ * Copyright © 2008-2016 - Harald Welte, Holger Freyther and contributors\n
* All rights reserved. \n\n
* The source code of libosmocore is licensed under the terms of the GNU
* General Public License as published by the Free Software Foundation;