making "test" an ash built-in

[Paul Fox]

oh, one more thing i forgot to mention:

CONFIG_FEATURE_SH_STANDALONE_SHELL, which causes applets to be
found before commands in the filesystem, also causes them to be
found before shell builtins.  (i consider this a bug.)

if you have it on, you'll never run the "test" or "echo"
builtin -- you'll run them in applet form -- and you won't get
the performance gain.

(note it's turned on by "make defconfig".)

paul
=---------------------
 paul fox, pgf at brightstareng.com