(sparc_ip): Initialize `len' variable to make gcc shut up.

(sparc_ip): Initialize `len' variable to make gcc shut up.
(md_create_short_jump, md_create_long_jump, md_number_to_chars,
md_section_align): Adjusted for new interface.

(s_reserve): Permit use for other than a.out format.
(s_common): Handle Solaris-2 version.

(s_xword): For numbers, call big_cons.
(sparc_ip, md_apply_fix, tc_gen_reloc): Handle some sparc64 reloc types.
(md_number_to_chars): Handle 8-byte values.