add extra undertaker tests -- several fail since they define a symbol multiple times
started migrating to an own dumpconf implementation based on xml
improve parser
experiments in progress
fix xml parser
fix parser, no KConfigFragmentTests are running again
several changes in dumpconf and the corresponding parser to work around various issues

there is different behavior between older and newer linux-kconfig versions. parsing the old linux
files with the never version dumpconf produces a segmentation fault

 the older version has problems with dependencies on `m` where they introduce an extra unnamed
 item in the constraint

separated out undertaker tests and generated nonparameterized tests
better error reporting if the dumpconf process fails
fixed issues with repeated names and dependencies on 'm'
linux tests fixed (part 1)
add support for dynamic range constraints