started examples-3.0 with examples that are tested to work

examples-3.0/tutorial/hello/Hello.gf

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+abstract Hello = {
+
+  cat Greeting ; Recipient ;
+
+  flags startcat = Greeting ;
+
+  fun 
+    Hello : Recipient -> Greeting ;
+    World, Mum, Friends : Recipient ;
+}

examples-3.0/tutorial/hello/HelloEng.gf

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+concrete HelloEng of Hello = {
+
+  lincat Greeting, Recipient = {s : Str} ;
+
+  lin 
+    Hello rec = {s = "hello" ++ rec.s} ;
+    World = {s = "world"} ;
+    Mum = {s = "mum"} ;
+    Friends = {s = "friends"} ;
+}

examples-3.0/tutorial/hello/HelloFin.gf

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+concrete HelloFin of Hello = {
+
+  lincat Greeting, Recipient = {s : Str} ;
+
+  lin 
+    Hello rec = {s = "terve" ++ rec.s} ;
+    World = {s = "maailma"} ;
+    Mum = {s = "äiti"} ;
+    Friends = {s = "ystävät"} ;
+}

examples-3.0/tutorial/hello/HelloIta.gf

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+concrete HelloIta of Hello = {
+
+  lincat Greeting, Recipient = {s : Str} ;
+
+  lin 
+    Hello rec = {s = "ciao" ++ rec.s} ;
+    World = {s = "mondo"} ;
+    Mum = {s = "mamma"} ;
+    Friends = {s = "amici"} ;
+}

examples-3.0/tutorial/hello/hello.gfs

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+import HelloEng.gf
+import HelloFin.gf
+import HelloIta.gf
+linearize Hello World