Target Windows 8 via project settings

It's needed for the next commit, as thanks to wxWidgets
anything using the precompiled header would default to 0x0600 (Vista)
instead of 0x0602 (Win8).

Now-redundant WINNT definitions resulting in macro redefinition
warnings have been removed.

common/vsprops/BaseProperties.props

@@ -11,7 +11,7 @@
     <ClCompile>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <AdditionalIncludeDirectories>$(SolutionDir);$(SolutionDir)\3rdparty\wxWidgets3.0\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>__WIN32__;WIN32;_WINDOWS;_CRT_SECURE_NO_WARNINGS;_CRT_SECURE_NO_DEPRECATE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>__WIN32__;WIN32;_WINDOWS;_CRT_SECURE_NO_WARNINGS;_CRT_SECURE_NO_DEPRECATE;WINVER=0x0603;_WIN32_WINNT=0x0603;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StructMemberAlignment>16Bytes</StructMemberAlignment>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <RuntimeTypeInfo>false</RuntimeTypeInfo>

pcsx2/CDVD/CDVDdiscReader.h

@@ -19,7 +19,6 @@
 #include "IopCommon.h"
 
 #if defined(_WIN32)
-#define _WIN32_WINNT 0x0600
 #define NOMINMAX
 #include <windows.h>
 #endif

pcsx2/CMakeLists.txt

@@ -85,6 +85,8 @@ if(WIN32)
 	)
 	target_compile_definitions(PCSX2 PRIVATE
 		_M_SSE=0x401 # TODO: Multiple ISA
+		WINVER=0x0603
+		_WIN32_WINNT=0x0603
 		WIN32_LEAN_AND_MEAN
 		LZMA_API_STATIC
 		BUILD_DX=1

pcsx2/DEV9/DEV9.cpp

@@ -14,8 +14,6 @@
  */
 
 #include "PrecompiledHeader.h"
-#define WINVER 0x0600
-#define _WIN32_WINNT 0x0600
 
 #ifdef _WIN32
 //#include <winsock2.h>

pcsx2/DEV9/smap.cpp

@@ -15,8 +15,6 @@
 
 #include "PrecompiledHeader.h"
 
-#define WINVER 0x0600
-#define _WIN32_WINNT 0x0600
 #ifdef _WIN32
 //#include <winsock2.h>
 #include <Winioctl.h>

pcsx2/SPU2/Windows/SndOut_XAudio2.cpp

@@ -17,8 +17,6 @@
 #include "SPU2/Global.h"
 #include "Dialogs.h"
 
-#undef _WIN32_WINNT
-#define _WIN32_WINNT 0x0602
 #include <xaudio2.h>
 #include <cguid.h>
 #include <atlcomcli.h>

pcsx2/SPU2/Windows/dsp.cpp

@@ -16,7 +16,6 @@
 #include "PrecompiledHeader.h"
 #include "SPU2/Global.h"
 
-#define _WIN32_WINNT 0x0600
 #include <windows.h>
 #include <mmsystem.h>
 

tests/ctest/GS/CMakeLists.txt

@@ -23,4 +23,11 @@ foreach(isa "sse4" "avx" "avx2")
 
 	target_compile_options(swizzle_test_${isa} PRIVATE ${compile_options_${isa}})
 	target_compile_definitions(swizzle_test_${isa} PRIVATE ${definitions_${isa}})
+	if(WIN32)
+		target_compile_definitions(swizzle_test_${isa} PRIVATE
+			WINVER=0x0603
+			_WIN32_WINNT=0x0603
+			WIN32_LEAN_AND_MEAN
+		)
+	endif()
 endforeach()