wenzelm [Thu, 15 Oct 2009 23:28:10 +0200] rev 32952
replaced String.concat by implode;
replaced String.concatWith by space_implode;
replaced (Seq.flat o Seq.map) by Seq.maps;
replaced List.mapPartial by map_filter;
replaced List.concat by flat;
replaced (flat o map) by maps, which produces less garbage;
wenzelm [Thu, 15 Oct 2009 21:08:03 +0200] rev 32949
eliminated slightly odd get/set operations in favour of Unsynchronized.ref;
eliminated aliases of Output operations;
print_cert: use warning for increased chance that the user actually sees the output;
misc tuning and simplification;