change the library root namespace from GF.GFCC to PGF

src-3.0/PGF/doc/Eng.gf

@@ -0,0 +1,13 @@
+concrete Eng of Ex = {
+  lincat
+    S  = {s : Str} ;
+    NP = {s : Str ; n : Num} ;
+    VP = {s : Num => Str} ;
+  param
+    Num = Sg | Pl ;
+  lin
+    Pred np vp = {s = np.s ++ vp.s ! np.n} ;
+    She = {s = "she" ; n = Sg} ;
+    They = {s = "they" ; n = Pl} ;
+    Sleep = {s = table {Sg => "sleeps" ; Pl => "sleep"}} ;
+}