Make Complex test of CMakeLib more optional

Previously we passed inputs to the decision to each Complex test and let
the test source decide.  This commit moves the decision out of the tests
and makes it an option() in their source.  This makes it possible to
build the Complex tests from outside the CMake test tree.

Tests/CMakeLists.txt

@@ -486,6 +486,10 @@ ${CMake_BINARY_DIR}/bin/cmake -DVERSION=CVS -P ${CMake_SOURCE_DIR}/Utilities/Rel
     SET(COMPILER_IS_COMO 1)
   ENDIF(CMAKE_BASE_NAME MATCHES "^como$")
   IF(NOT COMPILER_IS_COMO)
+    SET(COMPLEX_TEST_CMAKELIB 1)
+    IF(CMAKE_TEST_DIFFERENT_GENERATOR OR CMAKE_TEST_SYSTEM_LIBRARIES)
+      SET(COMPLEX_TEST_CMAKELIB 0)
+    ENDIF(CMAKE_TEST_DIFFERENT_GENERATOR OR CMAKE_TEST_SYSTEM_LIBRARIES)
     ADD_TEST(complex  ${CMAKE_CTEST_COMMAND}
       --build-and-test
       "${CMake_SOURCE_DIR}/Tests/Complex"
@@ -497,8 +501,7 @@ ${CMake_BINARY_DIR}/bin/cmake -DVERSION=CVS -P ${CMake_SOURCE_DIR}/Utilities/Rel
       --build-makeprogram ${CMAKE_TEST_MAKEPROGRAM}
       --build-exe-dir "${CMake_BINARY_DIR}/Tests/Complex/bin"
       --build-options
-      -DCMAKE_TEST_DIFFERENT_GENERATOR:BOOL=${CMAKE_TEST_DIFFERENT_GENERATOR}
-      -DCMAKE_TEST_SYSTEM_LIBRARIES:BOOL=${CMAKE_TEST_SYSTEM_LIBRARIES}
+      -DCOMPLEX_TEST_CMAKELIB:BOOL=${COMPLEX_TEST_CMAKELIB}
       -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
       --test-command complex
       )
@@ -513,8 +516,7 @@ ${CMake_BINARY_DIR}/bin/cmake -DVERSION=CVS -P ${CMake_SOURCE_DIR}/Utilities/Rel
       --build-makeprogram ${CMAKE_TEST_MAKEPROGRAM}
       --build-exe-dir "${CMake_BINARY_DIR}/Tests/ComplexOneConfig/bin"
       --build-options
-      -DCMAKE_TEST_DIFFERENT_GENERATOR:BOOL=${CMAKE_TEST_DIFFERENT_GENERATOR}
-      -DCMAKE_TEST_SYSTEM_LIBRARIES:BOOL=${CMAKE_TEST_SYSTEM_LIBRARIES}
+      -DCOMPLEX_TEST_CMAKELIB:BOOL=${COMPLEX_TEST_CMAKELIB}
       -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
       --test-command complex)
     LIST(APPEND TEST_BUILD_DIRS "${CMake_BINARY_DIR}/Tests/ComplexOneConfig")