first steps towards yielding through longjump

ldo.h

@@ -1,5 +1,5 @@
 /*
-** $Id: ldo.h,v 2.8 2006/07/11 15:53:29 roberto Exp roberto $
+** $Id: ldo.h,v 2.9 2008/07/03 14:24:36 roberto Exp roberto $
 ** Stack and Call structure of Lua
 ** See Copyright Notice in lua.h
 */
@@ -28,12 +28,6 @@
 #define restoreci(L,n)		((CallInfo *)((char *)L->base_ci + (n)))
 
 
-/* results from luaD_precall */
-#define PCRLUA		0	/* initiated a call to a Lua function */
-#define PCRC		1	/* did a call to a C function */
-#define PCRYIELD	2	/* C funtion yielded */
-
-
 /* type of protected functions, to be ran by `runprotected' */
 typedef void (*Pfunc) (lua_State *L, void *ud);