Initial revision of lua 'doc' function

luprex/core/cpp/globaldb.cpp

@@ -2,14 +2,7 @@
 #include "globaldb.hpp"
 
 
-// Get a table from the global database.
-//
-//   GLOBALNAME
-//   if globalname is already present, and is a table, return it.
-//   if globalname is already present, and not a table, error.
-//   if globalname is not present, create and initialize it.
-//
-LuaDefine(globaldb_global, "f") {
+LuaDefine(global, "globalname", "get a table where global data can be stored") {
     LuaArg globalname;
     LuaRet globaltab;
     LuaVar globaldb;