Toplevel patch: Remove EXTRA_TARGET_HOST hackery

[DJ Delorie]

> After my outstanding patches, the EXTRA_TARGET_HOST hackery isn't needed 
> anymore.  The all-libiberty target can be generated

I assume you meant all-termcap.

> unconditionally, because the "all" target only depends on it when it's
> being configured, which is exactly when it used to be added; similarly
> with the install-libiberty target.

What about mt-wince's inclusion of all-utils?