SRB2's built-in action types will now all be pushed as META_ACTION, state_t.action can be assigned META_ACTION and return it
getUserdataType returns "action" for META_ACTION variables
To re-enable support for the above, uncomment the define HAVE_LUA_SEGS line in lua_script.h. Plain bbox userdata stuff is not disabled (though currently it's not used anyway)
my P_SearchBlockmap_* functions are now a single searchBlockmap function, you can choose between "objects" and "lines" with the first arg to decide what to iterate through. I also rearranged the argument order a bit for easy stack cleanup etc
I'll remove the old stuff later, don't worry, it's disabled for now
