alpha-*-vms missing libraries

alpha-*-vms missing libraries

For this:
./ld-new: cannot find -limagelib: No such file or directory
./ld-new: cannot find -lstarlet: No such file or directory
./ld-new: cannot find -lsys$public_vectors: No such file or directory
the logs showed
creating dummy tmpdir/libimagelib:
creating dummy No
creating dummy such
etc.
So rubbish instead of tmpdir/libimagelib.a and the other required libs.

	* testsuite/config/default.exp: Correct regex detecting missing
	libraries automatically searched by alpha-dec-vms-ld.