[x265] [PATCH] threading: use InterlockedExchangeAdd for ATOMIC_ADD

[gopu at multicorewareinc.com]

# HG changeset patch
# User Gopu Govindaswamy <gopu at multicorewareinc.com>
# Date 1422867856 -19800
#      Mon Feb 02 14:34:16 2015 +0530
# Node ID 92bce6fdd447ef03a2e9245969739d58ecc3a2e9
# Parent  db56dc779466c5b54a55b5dadbcd04e882011729
threading: use InterlockedExchangeAdd for ATOMIC_ADD

This patch is to fix the build error in 32 bit compiler, the 32 bit compiler
will not support for InterlockedAdd insted use InterlockedExchangeAdd, this is
also adds a value to the target variable,

diff -r db56dc779466 -r 92bce6fdd447 source/common/threading.h
--- a/source/common/threading.h	Mon Feb 02 10:23:10 2015 +0530
+++ b/source/common/threading.h	Mon Feb 02 14:34:16 2015 +0530
@@ -64,7 +64,7 @@
 #define CTZ(id, x)                          _BitScanForward(&id, x)
 #define ATOMIC_INC(ptr)                     InterlockedIncrement((volatile LONG*)ptr)
 #define ATOMIC_DEC(ptr)                     InterlockedDecrement((volatile LONG*)ptr)
-#define ATOMIC_ADD(ptr, value)              InterlockedAdd((volatile LONG*)ptr, value)
+#define ATOMIC_ADD(ptr, value)              InterlockedExchangeAdd((volatile LONG*)ptr, value)
 #define ATOMIC_OR(ptr, mask)                _InterlockedOr((volatile LONG*)ptr, (LONG)mask)
 #define ATOMIC_AND(ptr, mask)               _InterlockedAnd((volatile LONG*)ptr, (LONG)mask)
 #define GIVE_UP_TIME()                      Sleep(0)