+Build Test: check_lua_classes.py

This regex Lua script test checks that:
1) A class can be outlined by Eclipse's LDT plugin.
2) Mistakes haven't been made in the first lines of a class's declaration
which would prevent its methods from being declared.

Regex:
^class "(.+)".*\n\n(?!---@type \1\nlocal \1 = _G\["\1"])

Can be tested at: http://www.pythonregex.com/ (Enabled Multi-Line)