[lua] fixed bug in template classes which cases template_default2 and template_specialization_defarg to fail.

Added several warning filters into the overload's test cases.
Added runtime tests for several codes.
You can now make check-lua-test-suite with no errors and only a few warnings.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@10076 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/lua/smart_pointer_overload_runme.lua

@@ -0,0 +1,14 @@
+require("import")	-- the import fn
+import("smart_pointer_overload")	-- import code
+for k,v in pairs(smart_pointer_overload) do _G[k]=v end -- move to global
+
+f = Foo()
+b = Bar(f)
+
+assert(f:test(3) == 1)
+--assert(f:test(3.5) == 2)	-- won't work due to being unable to overloads
+assert(f:test("hello") == 3)
+
+assert(b:test(3) == 1)
+--assert(b:test(3.5) == 2)	-- won't work due to being unable to overloads
+assert(b:test("hello") == 3)