yin parser FEATURE support usess forward references to groupings.
yin parser FEATURE support usess forward references to groupings.

Sometimes, uses references grouping that was not yet defined (parsed).
RFC is not clear about this, but pyang allows it, so we are supporting
it also.

PavolVican/libyang,PavolVican/libyang,lukasmacko/libyang,PavolVican/libyang,PavolVican/libyang,PavolVican/libyang,lukasmacko/libyang