Buildsystem/Windows: Minor adjustment to use the correct "environment"-variable in both VS2008 and VS2010

--HG--
branch : trunk

CMakeLists.txt

@@ -129,7 +129,7 @@ add_executable(genrev
 
 if( CMAKE_GENERATOR MATCHES "Visual Studio" )
   add_custom_target("revision.h" ALL
-    COMMAND "${CMAKE_BINARY_DIR}/bin/$(Configuration)/genrev"
+    COMMAND "${CMAKE_BINARY_DIR}/bin/$(ConfigurationName)/genrev"
     ${CMAKE_SOURCE_DIR}
     WORKING_DIRECTORY "${CMAKE_BINARY_DIR}"
     DEPENDS genrev