BUG: Comparison of build tool should be case-insensitive.

Modules/CMakeImportBuildSettings.cmake

@@ -21,10 +21,12 @@ MACRO(CMAKE_IMPORT_BUILD_SETTINGS SETTINGS_FILE)
     SET(CMAKE_BUILD_TOOL1 "")
     IF(CMAKE_BUILD_TOOL)
       GET_FILENAME_COMPONENT (CMAKE_BUILD_TOOL1 ${CMAKE_BUILD_TOOL} NAME_WE)
+      STRING(TOLOWER ${CMAKE_BUILD_TOOL1} CMAKE_BUILD_TOOL1)
     ENDIF(CMAKE_BUILD_TOOL)
     SET(CMAKE_BUILD_TOOL2 "")
     IF(CMAKE_BUILD_SETTING_BUILD_TOOL)
       GET_FILENAME_COMPONENT (CMAKE_BUILD_TOOL2 ${CMAKE_BUILD_SETTING_BUILD_TOOL} NAME_WE)
+      STRING(TOLOWER ${CMAKE_BUILD_TOOL2} CMAKE_BUILD_TOOL2)
     ENDIF(CMAKE_BUILD_SETTING_BUILD_TOOL)
     STRING(COMPARE NOTEQUAL "x${CMAKE_BUILD_TOOL1}" "x${CMAKE_BUILD_TOOL2}"
            CMAKE_BUILD_TOOL_MISMATCH)
@@ -87,8 +89,8 @@ MACRO(CMAKE_IMPORT_BUILD_SETTINGS SETTINGS_FILE)
       IF(CMAKE_BUILD_TOOL_MISMATCH)
         MESSAGE(SEND_ERROR
                 "${CMAKE_BUILD_SETTING_PROJECT_NAME} was built using "
-                "\"${CMAKE_BUILD_SETTING_BUILD_TOOL}\", but ${PROJECT_NAME} "
-                "is using \"${CMAKE_BUILD_TOOL}\".  The build will fail.  "
+                "\"${CMAKE_BUILD_TOOL2}\", but ${PROJECT_NAME} "
+                "is using \"${CMAKE_BUILD_TOOL1}\".  The build will fail.  "
                 "Try selecting a different CMake Generator.")
       ENDIF(CMAKE_BUILD_TOOL_MISMATCH)
     ENDIF(WIN32)