adjust the project build properties so SSE2 instructions are used (improves decoding performance) - also enables optimisations for the 64bit build

[Squall-Leonhart]

--- D:/Projects/MaiAT3PlusDecoder/windows/maiatrac3plus.vcxproj Sat Jun  8 09:11:58 2013
+++ D:/Projects/MaiAT3PlusDecoder/windows/maiatrac3plus.vcxproj Wed Jun 12 09:55:08 2013
@@ -122,8 +122,9 @@
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <FloatingPointModel>Fast</FloatingPointModel>
-      <EnableEnhancedInstructionSet>StreamingSIMDExtensions</EnableEnhancedInstructionSet>
+      <EnableEnhancedInstructionSet>StreamingSIMDExtensions2</EnableEnhancedInstructionSet>
       <BufferSecurityCheck>false</BufferSecurityCheck>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -145,6 +146,10 @@
       <AdditionalIncludeDirectories>..\include</AdditionalIncludeDirectories>
       <BufferSecurityCheck>false</BufferSecurityCheck>
       <FloatingPointModel>Fast</FloatingPointModel>
+      <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
+      <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
+      <EnableEnhancedInstructionSet>StreamingSIMDExtensions2</EnableEnhancedInstructionSet>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>