Added validation to most OLC functions.
Enhanced/uniformed most selections in OLC using an existing utility function.
Imported room flags and sectors from RavenMUD.
Deallocated several object and mob flag bits.
Removed APPLY_USELEVEL (object level should be used).
Expanded scope of flag validity check functions.
Merge pull request #10 from konradfatal/master

Added validation to most OLC functions.