fixup! machine: get rid of VAR_REF
parser: get rid of token debugging
machine: rename do_cmp() to cmp_value()
machine: add interface for fields of object
parser: fix setup of deref node
machine: fix invalid ptr dereference in object_put()
machine: add support for fields in objects
parser: simulate dot operator using deref operator
test: script: add deref tests
machine: add 1-arg operators + automatic conversions
test: script: add test for 1-arg operators