[lltk] add ast dumper
process lasgn
add not yet complete tests
implement if statement behavior
test check correctness of AST itself
-n 
[lltk] add ast dumper
-n 
process lasgn
add not yet complete tests
Merge commit '0166acd47b960c7ff3645432a140189fb2d9be75'

Conflicts:
	ext/lltk/compile.lua
Merge commit 'a56fd6e85cf76e3e59a2e4edff775b3dcf7beaf1'

pull latest version of lltk
implement luby runtime and object system which emurates ruby
add initial test for class system
tweak tests according to AST generation change