oldconfig: Use Kconfig.node_iter() and clean up

Some general cleanup:

 - Handle the iteration with the new Kconfig.node_iter() helper.

   This makes some function so short that they become pointless. Have
   just main() + oldconfig(node) + small helper functions.

 - Use _name_and_loc_str(sc) for choices too, so that all locations get
   reported for named choices defined in multiple locations

 - Rewrite the intro to be less wordy and remove the sample session
   (leftover from when oldconfig.py was in examples/, and not that
   exciting)

 - Print "Updated configuration written to..." instead of
   "Configuration saved to..."

 - Various other nits

1 files changed, 1 insertions, 4 deletions

diff --git a/menuconfig.py b/menuconfig.py
index ee79864..25047f3 100755
--- a/menuconfig.py
+++ b/menuconfig.py
@@ -268,10 +268,7 @@ def _expr_str(expr):
     # Custom expression printer that shows symbol values
     return expr_str(expr, _name_and_val_str)
 
-
-# Entry point when run as an executable, split out so that setuptools'
-# 'entry_points' can be used. It produces a handy menuconfig.exe launcher on
-# Windows.
+# Note: Used as the entry point in setup.py
 def _main():
     menuconfig(standard_kconfig())