(svn r586) -Fix: [1066114] Code error in win32.c Thanks Shai

-Fix: ttd.vcproj change to hard-set compilation as C, as well as adding WITH_SDL to debug mode. If you don't have SDL just remove that.

ttd.vcproj

@@ -46,7 +46,8 @@
 				BrowseInformation="1"
 				WarningLevel="3"
 				SuppressStartupBanner="TRUE"
-				DebugInformationFormat="3"/>
+				DebugInformationFormat="3"
+				CompileAs="1"/>
 			<Tool
 				Name="VCCustomBuildTool"/>
 			<Tool
@@ -119,7 +120,8 @@
 				WarningLevel="3"
 				SuppressStartupBanner="TRUE"
 				DebugInformationFormat="3"
-				CallingConvention="1"/>
+				CallingConvention="1"
+				CompileAs="1"/>
 			<Tool
 				Name="VCCustomBuildTool"/>
 			<Tool
@@ -170,6 +172,7 @@
 			CharacterSet="2">
 			<Tool
 				Name="VCCLCompilerTool"
+				AdditionalOptions="/D &quot;WITH_SDL&quot;"
 				Optimization="0"
 				PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE;WITH_ZLIB;WITH_PNG"
 				BasicRuntimeChecks="3"
@@ -183,7 +186,8 @@
 				WarningLevel="3"
 				WarnAsError="TRUE"
 				SuppressStartupBanner="TRUE"
-				DebugInformationFormat="4"/>
+				DebugInformationFormat="4"
+				CompileAs="1"/>
 			<Tool
 				Name="VCCustomBuildTool"/>
 			<Tool