* Allow selecting bcb6 projects in "Analyze" -> "Files..."
This change also splits the filters for files which can be analyzed into multiple entries and includes a helper class to construct filter strings.
* move FilterStringBuilder to its own class and document it
* add new files to .pro
* add missing include for Q_DECLARE_TR_FUNCTIONS macro
* re-run astyle
* allow to import bcb6 project when creating a new cppcheck project
exchange class FilterStringBuilder with a toFilterString() helper method
* add missing include