Support for Lua added - patch from Mark Gossage

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

Examples/test-suite/lua/abstract_access_runme.lua

@@ -0,0 +1,17 @@
+require("import")	-- the import fn
+import("abstract_access")	-- import code
+
+-- catch "undefined" global variables
+setmetatable(getfenv(),{__index=function (t,i) error("undefined global variable `"..i.."'",2) end})
+
+-- trying to instantiate pure virual classes
+-- should fail
+assert(pcall(abstract_access.A)==false)
+assert(pcall(abstract_access.B)==false)
+assert(pcall(abstract_access.C)==false)
+
+-- instantiate object
+d=abstract_access.D()
+
+--call fn
+assert(d:do_x()==1)