Support for += syntax for options, candidate for ticket #502
make sure we have a parrent option
add launch+= option to regression tests
Support for += syntax for options, candidate for ticket #502
allow empty parent
Now sorts includes, fixes #913
Implement sort properly with POSIX locale
Fixed argument handling
Removed debugging
Merge pull request #881 from cmouse/config-incremental-support

Support for += syntax for options, candidate for ticket #502