utils/checkpackagelib: CommentsMenusPackagesOrder: fix 'menuconfig' handling

utils/checkpackagelib: CommentsMenusPackagesOrder: fix 'menuconfig' handling

The CommentsMenusPackagesOrder check builds the 'state' to track the
depth of menus and conditions. However, a menuconfig doesn't create a
menu by itself - it is always followed by a condition that implies the
menu. As a result, when unwinding the 'state', the level will be wrong.

Fix this by checking for menu followed by a space, so it no longer
matches menuconfig. For consistency, do the same for comment and if
as well.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Jerzy Grzegorek <jerzy.m.grzegorek@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>