Fixing some syntactic and build system stupidity

indra/cmake/Variables.cmake

@@ -30,6 +30,7 @@ set(SCRIPTS_DIR ${CMAKE_SOURCE_DIR}/${SCRIPTS_PREFIX})
 set(VIEWER_DIR ${CMAKE_SOURCE_DIR}/${VIEWER_PREFIX})
 set(DISABLE_TCMALLOC OFF CACHE BOOL "Disable linkage of TCMalloc. (64bit builds automatically disable TCMalloc)")
 set(LL_TESTS OFF CACHE BOOL "Build and run unit and integration tests (disable for build timing runs to reduce variation)")
+set(DISABLE_FATAL_WARNINGS TRUE CACHE BOOL "Set this to FALSE to enable fatal warnings.")
 
 set(LIBS_PREBUILT_DIR ${CMAKE_SOURCE_DIR}/../libraries CACHE PATH
     "Location of prebuilt libraries.")