[Lua] Removed generation of _wrap_delete_XXXXX (wrappered destructor) which was unused and causing warning with g++ -Wall.

Removed other unused warning in typemaps.i and other places.
Added Examples/lua/embed3, and run tests a few test cases.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@10402 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/lua/disown_runme.lua

@@ -0,0 +1,12 @@
+require("import")	-- the import fn
+import("disown")	-- import code
+
+-- catch "undefined" global variables
+setmetatable(getfenv(),{__index=function (t,i) error("undefined global variable `"..i.."'",2) end})
+
+for x=0,100 do
+    a=disown.A()
+    b=disown.B()
+    b:acquire(a)
+end
+collectgarbage() -- this will double delete unless the memory is managed properly

Examples/test-suite/lua/import_nomodule_runme.lua

@@ -0,0 +1,14 @@
+require("import")	-- the import fn
+import("import_nomodule")	-- import code
+
+-- catch "undefined" global variables
+setmetatable(getfenv(),{__index=function (t,i) error("undefined global variable `"..i.."'",2) end})
+
+f = import_nomodule.create_Foo()
+import_nomodule.test1(f,42)
+import_nomodule.delete_Foo(f)
+
+b = import_nomodule.Bar()
+import_nomodule.test1(b,37)
+
+collectgarbage()