- returns true/false if the user's terminal supports all the passed flags
- returns the supported flags if no flags are passed for comparison
- automatically uses the auto-terminal-type flags if no user is logged-on

con_hi.cpp to str_util.c.
strip_invalid_attr now supports strings up to 1K in length.

No longer logs (or displays locally) failed password attempts if the sysop has so configured the system in SCFG.