COMP: avoid configuration wraning with VC2010

See http://www.cmake.org/pipermail/cmake/2011-May/044166.html

CMake/OTBCPack.cmake

@@ -6,6 +6,11 @@ MARK_AS_ADVANCED(OTB_USE_CPACK)
 
 IF(OTB_USE_CPACK)
 
+    # By default, do not warn when built on machines using only VS Express:
+    IF(NOT DEFINED CMAKE_INSTALL_SYSTEM_RUNTIME_LIBS_NO_WARNINGS)
+      SET(CMAKE_INSTALL_SYSTEM_RUNTIME_LIBS_NO_WARNINGS ON)
+    ENDIF()
+
     INCLUDE(InstallRequiredSystemLibraries)
     
     SET(CPACK_PACKAGE_NAME "OTB" CACHE STRING "Package name")