Generate annotation when assimilating Str() congruences.
Generate annotation when assimilating Str() congruences.

svn path=/trunk/StrategoXT/; revision=10539

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