coreutils: need to have -std=gnu99 in CC.

base/coreutils/coreutils.conf

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../coreutils/coreutils.conf
-# Copyright (C) 2006 - 2014 The OpenSDE Project
+# Copyright (C) 2006 - 2015 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 # Copyright (C) 1998 - 2003 Clifford Wolf
 #
@@ -55,7 +55,7 @@ var_append extraconfopt ' ' "--libexecdir=$libdir"
 
 # without injecting coreutils won't build
 var_append GCC_WRAPPER_INSERT ' ' '-std=gnu99'
-
+export CC="$CC -std=gnu99"
 # Move programs to the locations specified by the FHS
 var_append INSTALL_WRAPPER_FILTER "|" \
 	"sed -e 's,usr/bin/\