Fix usage of recently fixed Interlocked* functions.

* winbase.h (ilockincr, ilockdecr, ilockexch, ilockcmpexch): Add
volatile qualifier, to match Interlocked* functions.

winsup/cygwin/ChangeLog

@@ -1,3 +1,9 @@
+2008-07-12  Eric Blake  <ebb9@byu.net>
+
+	Fix usage of recently fixed Interlocked* functions.
+	* winbase.h (ilockincr, ilockdecr, ilockexch, ilockcmpexch): Add
+	volatile qualifier, to match Interlocked* functions.
+
 2008-07-11  Corinna Vinschen  <corinna@vinschen.de>
 
 	* select.cc (peek_pipe): Temporarily revert patch from 2008-05-30.
@@ -2163,4 +2169,3 @@
 	(fhandler_pipe::create): Simplify based on above change.
 
 	* tty.cc (tty_list::allocate): Remove non-NT code.
-

winsup/cygwin/winbase.h

@@ -1,6 +1,6 @@
 /* winbase.h
 
-   Copyright 2002, 2003, 2004 Red Hat, Inc.
+   Copyright 2002, 2003, 2004, 2008 Red Hat, Inc.
 
 This software is a copyrighted work licensed under the terms of the
 Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
@@ -12,7 +12,7 @@ details. */
 #define _WINBASE2_H
 
 extern __inline__ long
-ilockincr (long *m)
+ilockincr (volatile long *m)
 {
   register int __res;
   __asm__ __volatile__ ("\n\
@@ -24,7 +24,7 @@ ilockincr (long *m)
 }
 
 extern __inline__ long
-ilockdecr (long *m)
+ilockdecr (volatile long *m)
 {
   register int __res;
   __asm__ __volatile__ ("\n\
@@ -36,7 +36,7 @@ ilockdecr (long *m)
 }
 
 extern __inline__ long
-ilockexch (long *t, long v)
+ilockexch (volatile long *t, long v)
 {
   register int __res;
   __asm__ __volatile__ ("\n\
@@ -47,7 +47,7 @@ ilockexch (long *t, long v)
 }
 
 extern __inline__ long
-ilockcmpexch (long *t, long v, long c)
+ilockcmpexch (volatile long *t, long v, long c)
 {
   register int __res;
   __asm__ __volatile__ ("\n\