Fix Lua grammar file. Fix Antlr4 parsers to use visitor.
Merge branch 'master' of github.com:exKAZUu/Code2Xml

Conflicts:
	Code2Xml.Languages.ANTLRv3.Tests/JavaProcessorTest.cs
	Code2Xml.Languages.ANTLRv4.Tests/Processors/JavaProcessorTest.cs
	Code2Xml.Languages.ANTLRv4/Processors/Lua/LuaProcessor.cs