Function vounitStatus( unit )

Description:
Returns a token string giving the category of VOUnits compliance.

Possible return values are currently:

In the case of non-compliant values, more information can be found using the vounitMessage function.

Parameters:
unit (String)
unit string
Return Value (String):
"OK" for conformant VOUnits, otherwise some other value
Signature:
String vounitStatus(String)