desugaring for dymamic rule combinators that allow both intersection and union using the notation
desugaring for dymamic rule combinators that allow
both intersection and union using the notation

   s1 /R1\R2/ s2

The library strategies that are the target of the
desugarings have not been implemented yet.


svn path=/trunk/StrategoXT/; revision=7621

metaborg/strategoxt,lichtemo/strategoxt,metaborg/strategoxt,metaborg/strategoxt,lichtemo/strategoxt,Apanatshka/strategoxt,Apanatshka/strategoxt,metaborg/strategoxt,lichtemo/strategoxt,metaborg/strategoxt,Apanatshka/strategoxt,lichtemo/strategoxt,Apanatshka/strategoxt,Apanatshka/strategoxt,lichtemo/strategoxt