Use the *_SECURE_NO_WARNINGS defines for MSVC 2010 as well.

MSVC is Windows-only anyway, so I removed the extra check.
The version check could probably be just MSVC since I can think of no way the defines would break older or future versions.

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@840 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

code/CMakeLists.txt

@@ -730,12 +730,10 @@ ADD_LIBRARY( assimp SHARED
 
 ADD_DEFINITIONS( -DASSIMP_BUILD_DLL_EXPORT )
 
-if ( WIN32 )
-	if ( MSVC80 OR MSVC90 )
-		ADD_DEFINITIONS( -D_SCL_SECURE_NO_WARNINGS )
-		ADD_DEFINITIONS( -D_CRT_SECURE_NO_WARNINGS )
-	endif ( MSVC80 OR MSVC90 )
-endif ( WIN32 )
+if ( MSVC80 OR MSVC90 OR MSVC10 )
+	ADD_DEFINITIONS( -D_SCL_SECURE_NO_WARNINGS )
+	ADD_DEFINITIONS( -D_CRT_SECURE_NO_WARNINGS )
+endif ( MSVC80 OR MSVC90 OR MSVC10 )
 
 SET_TARGET_PROPERTIES( assimp PROPERTIES
 	VERSION ${LIBRARY_VERSION}