Tests: Simplify VSExcludeFromDefaultBuild configuration

Create a CTEST_TEST_DEVENV variable that is set to the
CMAKE_MAKE_PROGRAM used for Visual Studio 7, 8, and 9.  It will always
be either "devenv" or "VCExpress", and not "MSBuild".  Add the
VSExcludeFromDefaultBuild test only when this variable is set, and use
its value as the --build-makeprogram value.

More work will be needed later to restore the test on VS 10 and above
when devenv is available, but this is the simplest approach for now.

Tests/CMakeLists.txt

@@ -45,8 +45,13 @@ configure_file(${CMake_SOURCE_DIR}/Tests/EnforceConfig.cmake.in
 
 # Testing
 if(BUILD_TESTING)
+  set(CMAKE_TEST_DEVENV "")
   if(NOT CMAKE_TEST_DIFFERENT_GENERATOR)
     set(CMAKE_TEST_MAKEPROGRAM "${CMAKE_MAKE_PROGRAM}")
+    if(CMAKE_TEST_GENERATOR MATCHES "Visual Studio [7-9] " AND
+        NOT CMAKE_MAKE_PROGRAM MATCHES "[mM][sS][bB][uU][iI][lL][dD]\\.[eE][xX][eE]")
+      set(CMAKE_TEST_DEVENV "${CMAKE_MAKE_PROGRAM}")
+    endif()
   endif()
 
   if("${CMAKE_TEST_GENERATOR}" MATCHES "Unix Makefiles" OR ("${CMAKE_TEST_GENERATOR}" MATCHES Ninja AND NOT WIN32))
@@ -1616,7 +1621,7 @@ ${CMake_BINARY_DIR}/bin/cmake -DVERSION=master -P ${CMake_SOURCE_DIR}/Utilities/
       --test-command VSMidl)
     list(APPEND TEST_BUILD_DIRS "${CMake_BINARY_DIR}/Tests/VSMidl")
 
-    if(NOT MSVC60 AND NOT CMAKE_TEST_MAKEPROGRAM MATCHES "[mM][sS][bB][uU][iI][lL][dD]\\.[eE][xX][eE]")
+    if(CMAKE_TEST_DEVENV)
       # The test (and tested property) works with .sln files, so it's skipped when:
       # * Using VS6, which doesn't use .sln files
       # * cmake --build is set up to use MSBuild, since the MSBuild invocation does not use the .sln file
@@ -1628,7 +1633,9 @@ ${CMake_BINARY_DIR}/bin/cmake -DVERSION=master -P ${CMake_SOURCE_DIR}/Utilities/
           "${CMake_BINARY_DIR}/Tests/VSExcludeFromDefaultBuild"
           --build-config ${config}
           --build-two-config
-          ${build_generator_args}
+          --build-generator ${CMAKE_TEST_GENERATOR}
+          --build-makeprogram ${CMAKE_TEST_DEVENV}
+          --build-generator-toolset "${CMAKE_TEST_GENERATOR_TOOLSET}"
           --build-project VSExcludeFromDefaultBuild
           --test-command ${CMAKE_COMMAND}
              -D "activeConfig=${config}"