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

testsuite/lpgf/phrasebook/PhrasebookUrd.gf

@@ -0,0 +1,9 @@
+--# -path=.:present
+
+concrete PhrasebookUrd of Phrasebook = 
+  GreetingsUrd,
+  WordsUrd ** open 
+    SyntaxUrd,
+    Prelude in {
+
+}