Revert "I use CUDA7 on windows"

This reverts commit a74df25834.

ccminer.cpp

@@ -2208,7 +2208,7 @@ int main(int argc, char *argv[])
 
 	printf("*** ccminer " PACKAGE_VERSION " for nVidia GPUs by tpruvot@github ***\n");
 #ifdef WIN32
-	printf("\tBuilt with VC++ 2013 and nVidia CUDA SDK 7 RC\n\n");
+	printf("\tBuilt with VC++ 2013 and nVidia CUDA SDK 6.5\n\n");
 #else
 	printf("\tBuilt with the nVidia CUDA SDK 6.5\n\n");
 #endif

ccminer.vcxproj

@@ -54,7 +54,7 @@
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
-    <Import Project="$(VCTargetsPath)\BuildCustomizations\CUDA 7.0.props" />
+    <Import Project="$(VCTargetsPath)\BuildCustomizations\CUDA 6.5.props" />
   </ImportGroup>
   <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />