The LUA_QL macro was removed in lua 5.4.0.  Make the same transformation
as was made in the lua code itself.

diff -up monotone-1.1/src/lua_hooks.cc.orig monotone-1.1/src/lua_hooks.cc
--- monotone-1.1/src/lua_hooks.cc.orig	2014-05-04 03:15:17.000000000 -0600
+++ monotone-1.1/src/lua_hooks.cc	2020-06-30 10:22:58.480017092 -0600
@@ -90,7 +90,7 @@ extern "C"
         s = lua_tostring(LS, -1);
         if (s == NULL)
           return luaL_error(
-            LS, LUA_QL("tostring") " must return a string to ", LUA_QL("print")
+            LS, "'tostring' must return a string to 'print'"
           );
 
         if (i > 1)