Fixes Visual Studio linker warnings and removes debug libraries.

gameplay/gameplay.vcxproj

@@ -248,10 +248,11 @@
       </PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_ITERATOR_DEBUG_LEVEL=0;WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalIncludeDirectories>..\external-deps\bullet\include;..\external-deps\openal\include\AL;..\external-deps\alut\include\AL;..\external-deps\oggvorbis\include;..\external-deps\glew\include;..\external-deps\libpng\include;..\external-deps\zlib\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <RuntimeTypeInfo>
       </RuntimeTypeInfo>
+      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -264,9 +265,10 @@
       </PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;GAMEPLAY_MEM_LEAK_DETECTION;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_ITERATOR_DEBUG_LEVEL=0;WIN32;_DEBUG;_LIB;GAMEPLAY_MEM_LEAK_DETECTION;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalIncludeDirectories>..\external-deps\bullet\include;..\external-deps\openal\include\AL;..\external-deps\alut\include\AL;..\external-deps\oggvorbis\include;..\external-deps\glew\include;..\external-deps\libpng\include;..\external-deps\zlib\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <RuntimeTypeInfo>true</RuntimeTypeInfo>
+      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>