configure.in: Use xm-netbsd.h as the NetBSD xm file (not xm-siglist).

configure.in: Use xm-netbsd.h as the NetBSD xm file (not xm-siglist).

        * configure.in: Use xm-netbsd.h as the NetBSD xm file (not xm-siglist).
        Accept arm32 as arm, m68k4k as m68k, mipsle as mips-dec, and any
        manufacturer id for ns32k.
        * configure: Regenerated.
        * config/netbsd.h: When using ASM_WEAKEN_LABEL, make it global too.
        * config/t-netbsd: Don't compile libgcc1-test as the fns are in libc.
        * config/i386/netbsd.h: Undefine DWARF2_UNWIND_INFO, not define as 0.
        * config/m68k/netbsd.h: Same.
        * config/ns32k/netbsd.h: Same.
        * config/sparc/netbsd.h: Same.

From-SVN: r21484