1.a) There is only one call to SvTokenStream::SetCharSet
2.b) That call is from SvTokenStream::InitCtor and the argument is
gsl_getSystemTextEncoding()
2.a) SvTokenStream::SetCharSet is the sole caller of SvChar::GetTable
i.e.
pCharTab = SvChar::GetTable( nSet, gsl_getSystemTextEncoding() );
2.b) so this is in practive only ever...
pCharTab = SvChar::GetTable( gsl_getSystemTextEncoding(),
gsl_getSystemTextEncoding() );
3) SvChar::GetTable returns a table for converting from one encoding to
another.
4) so the whole thing is a no-op, i.e.
pCharTab can be dropped
SvChar::GetTable is then unused and can be dropped
SetCharSet and GetCharSet are then also unused
