Enhancements checklist

[Sh3b0]

• Add support for multidimensioan arrays and arrays of records.
• Add support for recursive routines.
• Allow using arrays/records as global variables and routine arguments.
• Generate fmt consts as needed and remove is_first_routine hack.
• Visiting identifier should only assign to tmp_p, loading into tmp_v should be done in AssignmentStatement only (this will make the IR much shorter).
• Add support for Windows.