(toplevel patch) Use canonical names for target_subdir, build_subdir.

[Andreas Schwab]

Nathanael Nerode <neroden@twcny.rr.com> writes:

> Use the canonical build and target names for build_subdir and target_subdir.
> This saves a tedious amount of work when we get around to autoconf 2.5x 
> conversion (where build_alias and target_alias may be empty strings).
> 
> Built successfully on i686-pc-linux-gnu.  (But then, this should make no
> difference at all in the native case.)

Did you try "make check"?  It's currently completely broken, see
gcc-testresults.

Andreas.