Optimize generators. Don't create vectors and call virtual-target.str all

over the place, which effort is wasted in we're no outputting debug info.


[SVN r20436]

tools/build

@@ -1 +1 @@
-Subproject commit 65f15750103a542c3e34d18f3bf9845a3d9991dd
+Subproject commit 61991baf6bfae72eda040010323c23fa4cd02ddb