Commment code and options relating to the old partial evaluator

This means that the -old-comp and -new-comp flags are not recognized anymore.

The only functional difference is that printnames were still normalized with
the old partial evaluator. Now that is done with the new partial evaluator.

src/compiler/GF/Compile/Compute/Concrete.hs

@@ -1,3 +1,3 @@
-module GF.Compile.Compute.Concrete(module M) where
-import GF.Compile.Compute.ConcreteLazy as M -- New
+module GF.Compile.Compute.Concrete{-(module M)-} where
+--import GF.Compile.Compute.ConcreteLazy as M -- New
 --import GF.Compile.Compute.ConcreteStrict as M -- Old, inefficient