* libgcc1-test.c: Renamed from cross-test.c.
* Makefile.in (LIBGCC1_TEST): Renamed from CROSS_TEST.
(all.cross): Delete $(ENQUIRE) dependency.
(libgcc1-test): Renamed from cross-test.
Delete unnecessary gcc-cross and $(LIBGCC) dependencies.
Link with -nostartfiles -nostdlib
`$(GCC_FOR_TARGET) --print-libgcc-file-name`.
(libgcc1-test.o): Renamed from cross-test.o.
Change gcc-cross dependency to xgcc since the latter is used.