Remove volatile qualifiers. The WIN32 Interlocked* functions by default
provide full memory barrier semantics.

Index: apr/atomic/win32/apr_atomic.c
===================================================================
--- apr.orig/atomic/win32/apr_atomic.c
+++ apr/atomic/win32/apr_atomic.c
@@ -28,18 +28,18 @@ APR_DECLARE(apr_status_t) apr_atomic_ini
  * as the arguments for as our apr_atomic_foo32 Functions
  */
 typedef WINBASEAPI apr_uint32_t (WINAPI * apr_atomic_win32_ptr_fn)
-    (apr_uint32_t volatile *);
+    (apr_uint32_t *);
 typedef WINBASEAPI apr_uint32_t (WINAPI * apr_atomic_win32_ptr_val_fn)
-    (apr_uint32_t volatile *, 
+    (apr_uint32_t *,
      apr_uint32_t);
 typedef WINBASEAPI apr_uint32_t (WINAPI * apr_atomic_win32_ptr_val_val_fn)
-    (apr_uint32_t volatile *, 
+    (apr_uint32_t *,
      apr_uint32_t, apr_uint32_t);
 typedef WINBASEAPI void * (WINAPI * apr_atomic_win32_ptr_ptr_ptr_fn)
-    (volatile void **, 
+    (void **,
      void *, const void *);
 
-APR_DECLARE(apr_uint32_t) apr_atomic_add32(volatile apr_uint32_t *mem, apr_uint32_t val)
+APR_DECLARE(apr_uint32_t) apr_atomic_add32(apr_uint32_t *mem, apr_uint32_t val)
 {
 #if (defined(_M_IA64) || defined(_M_AMD64))
     return InterlockedExchangeAdd(mem, val);
@@ -53,7 +53,7 @@ APR_DECLARE(apr_uint32_t) apr_atomic_add
 /* Of course we want the 2's compliment of the unsigned value, val */
 #pragma warning(disable: 4146)
 
-APR_DECLARE(void) apr_atomic_sub32(volatile apr_uint32_t *mem, apr_uint32_t val)
+APR_DECLARE(void) apr_atomic_sub32(apr_uint32_t *mem, apr_uint32_t val)
 {
 #if (defined(_M_IA64) || defined(_M_AMD64))
     InterlockedExchangeAdd(mem, -val);
@@ -64,7 +64,7 @@ APR_DECLARE(void) apr_atomic_sub32(volat
 #endif
 }
 
-APR_DECLARE(apr_uint32_t) apr_atomic_inc32(volatile apr_uint32_t *mem)
+APR_DECLARE(apr_uint32_t) apr_atomic_inc32(apr_uint32_t *mem)
 {
     /* we return old value, win32 returns new value :( */
 #if (defined(_M_IA64) || defined(_M_AMD64)) && !defined(RC_INVOKED)
@@ -76,7 +76,7 @@ APR_DECLARE(apr_uint32_t) apr_atomic_inc
 #endif
 }
 
-APR_DECLARE(int) apr_atomic_dec32(volatile apr_uint32_t *mem)
+APR_DECLARE(int) apr_atomic_dec32(apr_uint32_t *mem)
 {
 #if (defined(_M_IA64) || defined(_M_AMD64)) && !defined(RC_INVOKED)
     return InterlockedDecrement(mem);
@@ -87,7 +87,7 @@ APR_DECLARE(int) apr_atomic_dec32(volati
 #endif
 }
 
-APR_DECLARE(void) apr_atomic_set32(volatile apr_uint32_t *mem, apr_uint32_t val)
+APR_DECLARE(void) apr_atomic_set32(apr_uint32_t *mem, apr_uint32_t val)
 {
 #if (defined(_M_IA64) || defined(_M_AMD64)) && !defined(RC_INVOKED)
     InterlockedExchange(mem, val);
@@ -98,12 +98,12 @@ APR_DECLARE(void) apr_atomic_set32(volat
 #endif
 }
 
-APR_DECLARE(apr_uint32_t) apr_atomic_read32(volatile apr_uint32_t *mem)
+APR_DECLARE(apr_uint32_t) apr_atomic_read32(apr_uint32_t *mem)
 {
     return *mem;
 }
 
-APR_DECLARE(apr_uint32_t) apr_atomic_cas32(volatile apr_uint32_t *mem, apr_uint32_t with,
+APR_DECLARE(apr_uint32_t) apr_atomic_cas32(apr_uint32_t *mem, apr_uint32_t with,
                                            apr_uint32_t cmp)
 {
 #if (defined(_M_IA64) || defined(_M_AMD64)) && !defined(RC_INVOKED)
@@ -115,7 +115,7 @@ APR_DECLARE(apr_uint32_t) apr_atomic_cas
 #endif
 }
 
-APR_DECLARE(void *) apr_atomic_casptr(volatile void **mem, void *with, const void *cmp)
+APR_DECLARE(void *) apr_atomic_casptr(void **mem, void *with, void *cmp)
 {
 #if (defined(_M_IA64) || defined(_M_AMD64) || defined(__MINGW32__)) && !defined(RC_INVOKED)
     return InterlockedCompareExchangePointer((void**)mem, with, (void*)cmp);
@@ -125,7 +125,7 @@ APR_DECLARE(void *) apr_atomic_casptr(vo
 #endif
 }
 
-APR_DECLARE(apr_uint32_t) apr_atomic_xchg32(volatile apr_uint32_t *mem, apr_uint32_t val)
+APR_DECLARE(apr_uint32_t) apr_atomic_xchg32(apr_uint32_t *mem, apr_uint32_t val)
 {
 #if (defined(_M_IA64) || defined(_M_AMD64)) && !defined(RC_INVOKED)
     return InterlockedExchange(mem, val);