Lua for iOS shells and Command-Line-Interfaces

Minimal set of changes to Lua so it can be called from within an iOS app within Apple API constraints:

• Xcode project to create dynamic libraries
• rename main to lua_main and luac_main
• rename system to ios_system
• erase all memory when leaving the program

Instructions

• Run the shell script get_lua_source.sh with sh get_lua_source.sh. It will download the source and patch a few files.
• Run the shell script compile_lua.sh. This will create the lua_ios.xcframework binary framework.