bugfix add free memory before throw exception
Fix bug when SessionProperties object is null.
Minor fixes. - Add __cdecl to avoid compiler warnings.
update version to 3.1.6.1
Modified RADIUS Packet to allow multiple AttributeTypes with different values.
fileformat utf-16 to utf-8 [part 1]

git will tread utf-16 text as binary
fileformat utf-16 to utf-8 [part 2]

git will tread utf-16 text as binary
Merge branch 'debug' into login-mask