Support for Lua added - patch from Mark Gossage

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@7365 626c5289-ae23-0410-ae9c-e8d60b6d4f22

SWIG/Examples/test-suite/lua/exception_order_runme.lua

@@ -0,0 +1,29 @@
+-- demo of lua swig capacilities (operator overloading)
+require("import")	-- the import fn
+import("exception_order",true)	-- import lib into global
+
+-- catching undefined variables
+setmetatable(getfenv(),{__index=function (t,i) error("undefined global variable `"..i.."'",2) end})
+
+a = A()
+
+function try1()
+	a:foo()
+end
+
+ok,ex=pcall(try1)
+assert(ok==false and swig_type(ex)==swig_type(E1()))
+
+function try2()
+	a:bar()
+end
+ok,ex=pcall(try2)
+assert(ok==false and swig_type(ex)==swig_type(E2()))
+
+function try3()
+	a:foobar()
+end
+ok,ex=pcall(try3)
+assert(ok==false and type(ex)=="string")
+-- the SWIG_exception is just an error string
+