[4.7][google] Adding a new option "-fstack-protector-strong". (issue 5461043)

[davidxl@google.com]

ok for google branches with the above changes. Please continue to seek
upstream approval.

David


http://codereview.appspot.com/5461043/diff/19001/gcc/doc/invoke.texi
File gcc/doc/invoke.texi (right):

http://codereview.appspot.com/5461043/diff/19001/gcc/doc/invoke.texi#newcode403
gcc/doc/invoke.texi:403: +-fstack-protector-strong -fstack-protector-all
-fstrict-aliasing @gol
Switch the order of -fstack-protector-all and -fstack-proctor-strong (in
alphabetic order)

http://codereview.appspot.com/5461043/diff/19001/gcc/doc/invoke.texi#newcode8446
gcc/doc/invoke.texi:8446: +@item -fstack-protector-strong
Move this item after -fstack-protector-all

http://codereview.appspot.com/5461043/