Tests: Launch CMake.Install test through 'cmake --build'

Use "cmake --build" to drive the "install" target from the CMake build
tree itself.  This avoids using the heavier "ctest --build-and-test"
just to run the native build tool to drive installation.

Tests/CMakeInstall.cmake

@@ -17,29 +17,15 @@ if(CMake_TEST_INSTALL)
   if(CMAKE_CONFIGURATION_TYPES)
     # There are multiple configurations.  Make sure the tested
     # configuration is the one that is installed.
-    set(CMake_TEST_INSTALL_CONFIG -C "\${CTEST_CONFIGURATION_TYPE}")
+    set(CMake_TEST_INSTALL_CONFIG --config $<CONFIGURATION>)
   else()
     set(CMake_TEST_INSTALL_CONFIG)
   endif()
 
-  # The CTest of the CMake used to build this CMake.
-  if(CMAKE_CTEST_COMMAND)
-    set(CMake_TEST_INSTALL_CTest ${CMAKE_CTEST_COMMAND})
-  else()
-    set(CMake_TEST_INSTALL_CTest ${CMake_BIN_DIR}/ctest)
-  endif()
-
   # Add a test to install CMake through the build system install target.
-  add_test(CMake.Install
-    ${CMake_TEST_INSTALL_CTest}
-    ${CMake_TEST_INSTALL_CONFIG}
-    --build-and-test ${CMake_SOURCE_DIR} ${CMake_BINARY_DIR}
-    --build-generator ${CMAKE_GENERATOR} # Not CMAKE_TEST_GENERATOR
-    --build-project CMake
-    --build-makeprogram ${CMAKE_MAKE_PROGRAM} # Not CMAKE_TEST_MAKEPROGRAM
-    --build-nocmake
-    --build-noclean
-    --build-target install)
+  add_test(NAME CMake.Install
+    COMMAND cmake --build . --target install ${CMake_TEST_INSTALL_CONFIG}
+    )
 
   # Avoid running this test simultaneously with other tests:
   set_tests_properties(CMake.Install PROPERTIES RUN_SERIAL ON)