cleaning project of unused files

Hello,

the problem with identification of used design files is, that a design file could be used although it isn't included in the *.qsf file. When the HDL compiler find an entity not defined in project files, it tries to open a file with the entities name and processes it normally, only creating a warning. The Quartus archiver also supports this implicite import by simply including all design files found in the design root directory.

Regards,

Frank