lex/yacc demos

This is a set of demos for the classic lex and yacc tools.

* calc
  - Infix calculator demo based on the Lex & Yacc by John Levine et al.
* yblog
  - example document generation tool
* umv
  - micro vm (p-code like) demo and assembler (lex demo) for compiler
* compiler
  - demo compiler to uvm bytecode