fix libsnes dlls on windows xp

libsnes/vs2015/libsnes.vcxproj

@@ -98,6 +98,7 @@
       <PreprocessorDefinitions>HOOKS;BIZHAWK;PROFILE_PERFORMANCE;GAMEBOY;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <MinimalRebuild>false</MinimalRebuild>
+      <AdditionalOptions>/Zc:threadSafeInit- %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -113,6 +114,7 @@
       <PreprocessorDefinitions>HOOKS;BIZHAWK;PROFILE_COMPATIBILITY;GAMEBOY;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <MinimalRebuild>false</MinimalRebuild>
+      <AdditionalOptions>/Zc:threadSafeInit- %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -136,6 +138,7 @@
       <EnableEnhancedInstructionSet>StreamingSIMDExtensions</EnableEnhancedInstructionSet>
       <FloatingPointModel>Fast</FloatingPointModel>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <AdditionalOptions>/Zc:threadSafeInit- %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -159,6 +162,7 @@
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <OmitFramePointers>true</OmitFramePointers>
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
+      <AdditionalOptions>/Zc:threadSafeInit- %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>