File type constants

The following constants exist to indicate the type of a particular file:


 * fa_readonly read-only files
 * fa_hidden hidden files
 * fa_sysfile system files
 * fa_volumeid volume-id files
 * fa_directory directories
 * fa_archive archived files

These are for example used in the function file_find_first(mask,attr). To specify combinations you can add up the constants.