Converter: add to project/package also files without path definition in the main source file

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41725 4005530d-fff6-0310-9dd1-cebe43e6787f
Converter: cleanup + remove dead code

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41726 4005530d-fff6-0310-9dd1-cebe43e6787f