Porting changes from stdenv-updates into this branch.

This comes from:
svn diff  ^/nixpkgs/trunk/@18255 ^/nixpkgs/branches/stdenv-updates/ > diff
patch -p0 < diff
and then adding into svn all files new from the patch.

trunk@18255 comes from the last time I updated stdenv-updates from trunk.


svn path=/nixpkgs/stdenv-updates2/; revision=18272

pkgs/development/libraries/icu/default.nix

@@ -10,6 +10,9 @@ stdenv.mkDerivation {
 
   patchFlags = "-p0";
 
+  CFLAGS = "-O0";
+  CXXFLAGS = "-O0";
+
   patches = [
     (fetchurl {
       url = "http://sources.gentoo.org/viewcvs.py/*checkout*/gentoo-x86/dev-libs/icu/files/icu-3.8-setBreakType-public.diff?rev=1.1";