* child_info.h (fork_info): Use different method to alias variable.

(spawn_info): Ditto.
* cxx.cc (__cxa_guard_acquire): New function (needed for gcc 4.x).
(__cxa_guard_release): Ditto.
* devices.in: Make sure stuff is correctly bracketed (for gcc 4.x).
* devices.cc: Regenerate.
* fhandler.h (fhandler_disk_file::fchmod): Avoid left coercion (for gcc 4.x).
* smallprint.c (__rn): Declare as __fastcall since gcc 4.x complains about use
of regparm, for some reason.
* sync.h (sync::init_lock): Remove.
* sync.cc (sync::init_lock): Ditto.

winsup/cygwin/fhandler.h

@@ -141,7 +141,7 @@ class fhandler_base
   bool exists () const {return pc.exists ();}
   int pc_binmode () const {return pc.binmode ();}
   device& dev () {return pc.dev;}
-  operator DWORD& () {return (DWORD) pc;}
+  operator DWORD& () {return (DWORD&) pc;}
   virtual size_t size () const {return sizeof (*this);}
 
   virtual fhandler_base& operator =(fhandler_base &x);