Add Phrasebook to testsuite. Move grammars into subfolders. Add run-bench script.

testsuite/lpgf/phrasebook/PhrasebookFre.gf

@@ -0,0 +1,11 @@
+--# -path=.:present
+
+concrete PhrasebookFre of Phrasebook = 
+  GreetingsFre,
+  WordsFre
+  ** open 
+    SyntaxFre,
+    Prelude in {
+
+  
+}