Deep userdata changes

* bumped version to 3.9.6
* separate deep userdata code in a dedicated file to allow external
modules to implement Lanes-compatible deep userdata without requiring a
binary dependency against the Lanes module. because of this linda_id
function(eDO_metatable) must push 2 values on the stack: a metatable and
a deep version string obtained from luaG_pushdeepversion()

1 files changed, 1 insertions, 0 deletions

diff --git a/src/deep.h b/src/deep.h
index e1f2c4f..8e999d6 100644
--- a/src/deep.h
+++ b/src/deep.h
@@ -27,5 +27,6 @@ typedef void* (*luaG_IdFunction)( lua_State* L, enum eDeepOp op_);
 
 extern LANES_API int luaG_newdeepuserdata( lua_State* L, luaG_IdFunction idfunc);
 extern LANES_API void* luaG_todeep( lua_State* L, luaG_IdFunction idfunc, int index);
+extern LANES_API void luaG_pushdeepversion( lua_State* L);
 
 #endif // __LANES_DEEP_H__