reinstate apps and root apps in dynamic rule left-hand sides, but now using a tuple instead of the Keys constructor
reinstate apps and root apps in dynamic rule left-hand sides, but now using a tuple instead of the Keys constructor

svn path=/trunk/StrategoXT/; revision=11950

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