I also added license information to source files where it was
missing and changed the way the license block is organized. All
the sources' license information comments follow the same pattern:
/* [ Optional short file description ]
*
* [ Optional copyright notices]
*
* License information block
*
* [ Optional 'Authors:' section ]
*/
The LGPL is references consistently now; source files with main()
function, like tests or D-Bus services, use 'program' in the license
information block, while the other sources use 'library' word.