Initial version of loglang.

It tokenizes more or less ok, and has support for basic AST trees. Initally it will be an interpreted language.
Added variables to AST, it now compiled basic percentage program.
Added trim to feeded data, some small performance improvements. Added use -O2.
Added support for edge_if, and more ops, as >=, <=, ==. Converted = to an op, returns the assigned value.
Added support for preloaded data file, for setting initial rules. Added + - expressions. Added configurable debug tokenizer.
Added dependency check on AST.
Improved error reporting, do not crash on error compiling, just ignore that program.
Added README.md with minimal BNF and project intentions.
Added support for at do, function calling and * parsing. Updated example.
Added glob support, internal variables are now not just strings. Better language support. Initial system monitor rules files.
Fixed default rules, to print all easy stuff.
Changed some names: DataItem->Symbol, datastore->symboltable and similar. Separated AST concrete classes on separate header.
Builtins moved to its own class, easy adding new functions.
Added virtual destructors to avoid memory leaks. Catch all exceptions to allow proper destrucion of data, even if not catched before. Produces an exit 1 anyway.
Merge remote-tracking branch 'origin/master'