Add a generic node iterator

Suggested by Mitja Horvat (pinkfluid) in
https://github.com/ulfalizer/Kconfiglib/pull/50.

Kconfig.node_iter() iterates through all menu nodes in the menu tree in
Kconfig order. This saves scripts the trouble of implementing their own
tree walking code.

Have node_iter() take a 'unique_syms' flag that can be enabled to only
include symbols defined in multiple locations once. This is often what
you want when generating output (and is used by write_config()). Order
is still preserved.

Piggyback a fix to a syntax error test comment. Parsing has been
tightened up now.

0 files changed, 0 insertions, 0 deletions