Don't use broken DL_AUTO_FUNCTION_ADDRESS()

Don't use broken DL_AUTO_FUNCTION_ADDRESS()

On hppa and ia64, the macro DL_AUTO_FUNCTION_ADDRESS() uses the
variable fptr[2] in it's own scope.

The content of fptr[] is thus undefined right after the macro exits.
Newer gcc's (>= 4.7) reuse the stack space of this variable triggering
a segmentation fault in dl-init.c:69.

To fix this we rewrite the macros to make the call directly to init
and fini without needing to pass back a constructed function pointer.

URL: https://bugs.gentoo.org/486618
URL: https://bugs.gentoo.org/486974

(cherry picked from commit daf75146de07303ea0c5ad700ec5ef703ec114a1)