From the Lua 5.1 manual:
"The luaopen_* functions (to open libraries) cannot be called directly,
like a regular C function. They must be called through Lua,
like a Lua function."
All standard tables are now loaded with luaL_openlibs(), which includes os and io.
Because these are inherently unsafe, there is a new config setting:
<AllowDangerousScriptFunctions on="1" />
This is disabled by default.
The title screen will show a warning when the setting is on.
Apparently there is a new map with the index 55 -- a related entry was
added to the worldmap.txt file to prevent data loss, just in case.
<StartData ch=... /> field is not yet handled missing.
Hopefully the resulting format can be loaded on android without problems,
especially because both "ingr" and "ingrNames" fields appear in the
StartData tag now.
The .glf file is based on the original russian file, but binary-patched
so that the game can load it without special hacks messing with
texture coordinates, which would break loading the original english glf file.