STR-371: --statistics option 
STR-371: --statistics option 

Provide general --statistics option as part of the standard io-wrap options
and print run-time of components if statistics level is geq 1.


svn path=/trunk/StrategoXT/; revision=11918

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