[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/overload_simple_runme.lua

@@ -0,0 +1,55 @@
+require("import")	-- the import fn
+import("overload_simple")	-- import code
+for k,v in pairs(overload_simple) do _G[k]=v end -- move to global
+
+-- lua has only one numeric type, foo(int) and foo(double) are the same
+-- whichever one was wrapper first will be used
+
+assert(foo(3)=="foo:int" or foo(3)=="foo:double") -- could be either
+assert(foo("hello")=="foo:char *")
+
+f=Foo()
+b=Bar()
+
+assert(foo(f)=="foo:Foo *")
+assert(foo(b)=="foo:Bar *")
+
+v = malloc_void(32)
+
+assert(foo(v) == "foo:void *")
+
+s = Spam()
+
+assert(s:foo(3) == "foo:int" or s:foo(3.0) == "foo:double") -- could be either
+assert(s:foo("hello") == "foo:char *")
+assert(s:foo(f) == "foo:Foo *")
+assert(s:foo(b) == "foo:Bar *")
+assert(s:foo(v) == "foo:void *")
+
+assert(Spam_bar(3) == "bar:int" or Spam_bar(3.0) == "bar:double")
+assert(Spam_bar("hello") == "bar:char *")
+assert(Spam_bar(f) == "bar:Foo *")
+assert(Spam_bar(b) == "bar:Bar *")
+assert(Spam_bar(v) == "bar:void *")
+
+-- Test constructors
+
+s = Spam()
+assert(s.type == "none")
+
+s = Spam(3)
+assert(s.type == "int" or s.type == "double")
+
+s = Spam("hello")
+assert(s.type == "char *")
+
+s = Spam(f)
+assert(s.type == "Foo *")
+
+s = Spam(b)
+assert(s.type == "Bar *")
+
+s = Spam(v)
+assert(s.type == "void *")
+
+free_void(v)