binutils/binutils: forward-port the patchset from 2.20 to 2.20.1

Among other things, this should fix the issue reported by Thomas at:
http://sourceware.org/ml/crossgcc/2010-08/msg00115.html

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

 --- 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;