SWDEV-301289 - Treewide macro rename

ATI_OS_WIN -> _WIN32
ATI_OS_LINUX -> __linux__

We should not rely on non-standard macros for platform detections.

Change-Id: If1d06e2e1187268df62a59609ea5496ab7eb709d

opencl/tests/ocltst/include/OCL/Thread.h

@@ -25,7 +25,7 @@
 //! \file Thread.h
 //!
 
-#ifdef ATI_OS_WIN
+#ifdef _WIN32
 #ifndef _WIN32_WINNT
 #define _WIN32_WINNT 0x0501
 #endif
@@ -86,7 +86,7 @@ class Lock {
   //!
 
   //! System specific synchronization primitive
-#ifdef ATI_OS_WIN
+#ifdef _WIN32
   CRITICAL_SECTION _cs;
 #else
   pthread_mutex_t _lock;
@@ -131,7 +131,7 @@ class Thread {
   //! Private data members and methods
   //!
 
-#ifdef ATI_OS_WIN
+#ifdef _WIN32
   //!  store the handle
   HANDLE _tid;