This is ment to be used for debugging false positive errors in Cppcheck.
Current implementation tries two alternatives. Without all headers or with all headers and prints out the option with
less code. In future versions this could try with individual headers or group of header files.
The "ExtraVersion" can be used for things like Git commit Id,
release tag (version control), release date etc. If the string
is empty, nothing is printed.
Unify usage and API of CppCheck class. Allow only one file checked
at a time, instead of list of files. Clients can then handle file
lists more naturally and as they see fit. Also clients have better
knowledge of how checking status should be handled.
The single-threaded CLI checking was only one using the file list.
Other clients were giving files (to list) one file at a time.
CLI and GUI already do the directory walking for us and we have list
of files to check. So we were duplicating this directory walking.
Practically doing check again for each file if it is a directory.
Which can take some time with large amount of files.