[libsmi] Regarding Unsigned64 interpretation by SMILINT

Hi LIBSMI Folks ,

When a MIB containing Unsigned64 object is compiled using SMILINT . it gives the below error :

xxxx.my:22: [0] {keyword-illegal-in-mib} the SPPI construct/keyword `Unsigned64' may not be used in a MIB

Although the Unsigned64 Object is defined in the MIB .

Thanks Rohit