utils/checkpackagelib: CommentsMenusPackagesOrder: append elements to arrays if needed

utils/checkpackagelib: CommentsMenusPackagesOrder: append elements to arrays if needed

In the future, the nesting level of menus, comments and conditions may
increase. The fixed array length used now is not appropriate. Therefore,
append elements to the arrays if needed.

Also change order of variables.

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