libc/glibc: let glibc 3.3.6 link correctly

From http://sourceware.org/git/?p=glibc.git;a=commit;f=elf/Makefile;h=7c8a67320e26b8c11108bf0a3410d3aef9cf3486

Author: Ulrich Drepper <drepper@redhat.com>:
Commit log:
* elf/Makefile (ld.so): Adjust the sed script to insert _begin in to
newer linker scripts.

Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>

 --- binutils/ld/ldmain.c

 +++ binutils/ld/ldmain.c

 @@ -293,2 +293,3 @@ main (int argc, char **argv)

    link_info.combreloc = TRUE;

 +  link_info.relro = TRUE;

    link_info.strip_discarded = TRUE;