* configure.in (vax-*-netbsdelf*, vax-*-netbsdaout*)
(vax-*-netbsd*): New targets.
* configure: Regenerate.
* config/aout_gnu.h (enum machine_type): Add M_VAX4K_NETBSD.
* config/tc-vax.c: Add support for ELF and PIC.
(flag_want_pic): New flag.
(float_cons): Fix prototype.
(md_apply_fix3): Adjust for BFD_ASSEMBLER.
(md_assemble): Introduce a new is_absolute local, and use it
rather than repeating the test. Make fatal errors actually
fatal by using as_fatal as appropriate. Adjust for BFD_ASSEMBLER.
Add support for ELF. Add support for PIC.
(md_convert_frag): Adjust for BFD_ASSEMBLER.
(tc_aout_fix_to_chars): Only include if OBJ_AOUT and not
BFD_ASSEMBLER.
(vax_reg_parse): Make the % register prefix mandatory for ELF,
optional for a.out, and not allowed for VMS. Adjust all callers.
(md_create_short_jump): Add ATTRIBUTE_UNUSED to unused arguments.
(md_create_long_jump): Likewise.
(md_undefined_symbol): Likewise.
(md_section_align): Likewise.
(md_shortopts): Allow -k and -K for ELF.
(md_parse_option): Set flag_want_pic if -k or -K.
(tc_headers_hook): New function if OBJ_AOUT and not BFD_ASSEMBLER.
(tc_gen_reloc): New function if BFD_ASSEMBLER.
* config/tc-vax.h (tc_headers_hook): Remove.
(TARGET_FORMAT): Set according to object format and target
environment.
(BFD_ARCH, TARGET_ARCH): Define.
(NO_RELOC): Adjust for BFD_ASSEMBLER.
(TC_RELOC_RTSYM_LOC_FIXUP, TC_FIX_ADJUSTABLE)
(tc_fix_adjustable): Define if BFD_ASSEMBLER.
* config/vax-inst.h (VAX_JSB, VAX_CALLS, VAX_CALLG): Define.
