[lldb/Cmake] Add a CMakeLists.txt to the utils directory...

... and include it from the main CMakeLists.txt instead of including the
utility subdirectories directly. This is consistent with the other
subdirectories and limits the scope of future changes.

lldb/CMakeLists.txt

@@ -92,8 +92,7 @@ option(LLDB_INCLUDE_TESTS "Generate build targets for the LLDB unit tests." ${LL
 if(LLDB_INCLUDE_TESTS)
   add_subdirectory(test)
   add_subdirectory(unittests)
-  add_subdirectory(utils/lit-cpuid)
-  add_subdirectory(utils/lldb-dotest)
+  add_subdirectory(utils)
 endif()
 
 if (LLDB_ENABLE_PYTHON)

lldb/utils/CMakeLists.txt

@@ -0,0 +1,2 @@
+add_subdirectory(lit-cpuid)
+add_subdirectory(lldb-dotest)