- saner names for some of the .pc files (reduce the amount of .pc files?)
- plugin loading support in ldb
- proper #include dependencies:
  for each subsystem:
  - include line in Makefile
  - rule in Makefile
- generate headermap.txt

set of test scripts that check the code:
- configure_check_unused.pl
- find_unused_macros.pl
- find_unused_makefilevars.pl
- find_unused_options.sh
- findstatic.pl
- minimal_includes.pl
- check dependencies based on #include lines ?
- check whether private headers are not used outside their own subsystem