process lasgn
add not yet complete tests
Squashed 'ext/lltk/' changes from c66259c..368d854

368d854 -n [lltk] add ast dumper

git-subtree-dir: ext/lltk
git-subtree-split: 368d854decec5955e29ea6c9d426d29c41911251
Merge commit '07b8764f97bb7d15cdbe4483e458712e41113fd7'

Conflicts:
	ext/lltk/syntax.lua