[Toybox] Moving to toys/posix and toys/lsb.

[Rob Landley]

I banged up a quick make/make.sh modification to handle commands in
subdirectories, so menuconfig can show menus for "Posix", "LSB", and
"Other". (Maybe Android at some point.)

One technical limitation is that it's still more or less a flat
namespace: having a toys/posix/command.c and toys/lsb/command.c with the
same name would fight both at the .config level and in the final command
list. Then again this never seemed to bother anyone elsewhere, so...

It was getting a bit crowded.

Rob
-- 
GNU/Linux isn't: Linux=GPLv2, GNU=GPLv3+, they can't share code.
Either it's "mere aggregation", or a license violation.  Pick one.