[C++ PATCH] Deprecate -ffriend-injection

https://gcc.gnu.org/ml/gcc-patches/2018-02/msg01020.html
	* doc/extend.texi (Backwards Compatibility): Americanize 'behaviour'.

From-SVN: r257755

gcc/ChangeLog

+2018-02-16  Nathan Sidwell  <nathan@acm.org>
+
+	* doc/extend.texi (Backwards Compatibility): Americanize 'behaviour'.
+
 2018-02-16  Carl Love  <cel@us.ibm.com>
 
 	* config/rs6000/rs6000-builtin.def: Add BU_P8V_VSX_2 macro definition.

gcc/doc/extend.texi

@@ -23882,13 +23882,13 @@ deprecated.   @xref{Deprecated Features}.
 If a variable is declared at for scope, it used to remain in scope
 until the end of the scope that contained the for statement (rather
 than just within the for scope).  The deprecated
-@option{-fno-for-scope} option enables this non-standard behaviour.
+@option{-fno-for-scope} option enables this non-standard behavior.
 Without the option, G++ retains this, but issues a warning, if such a
 variable is accessed outside the for scope.
 
-The behaviour is deprecated, only available with @option{-std=c++98}
+The behavior is deprecated, only available with @option{-std=c++98}
 @option{-std=gnu++98} languages and you must use the
-@option{-fpermissive} option to enable it.  The behaviour will be
+@option{-fpermissive} option to enable it.  The behavior will be
 removed.
 
 @item Friend Injection