* configure.in (libc_cv_gcc_dwarf2_unwind_info): Delete.
(HAVE_DWARF2_UNWIND_INFO{,_STATIC}): Remove AC_DEFINEs.
* configure: Regenerate.
* config.h.in (HAVE_DWARF2_UNWIND_INFO{,_STATIC}): Remove undefs.
* elf/soinit.c: Don't include gccframe.h.
(__EH_FRAME_BEGIN__): Define unconditionally.
(__register_frame_info, __deregister_frame_info)
(__register_frame_info_bases, __deregister_frame_info_bases)
(__register_frame, __deregister_frame): Remove declarations.
(__libc_global_ctors, __libc_fini): Don't call registry functions.
* elf/sofini.c (__EH_FRAME_END__): Define unconditionally.