Replaces commands/hexdump as well as commands/od.
No Minix-specific changes were needed.
test/testsh2.sh was modified to match the spacing
used in the output of the NetBSD od command.
Change-Id: I65ee1d30e8cdd546097462df7c38c2d38f3e891d
Adding the bomb function which takes as a parameter a string
to be printed, print it, cleans up and exits with an error
code. It also means they will exit after the first error, unlike
previous behaviour.
Change-Id: Id0ffdf3938da43586c9dae7c566ee130533c5577