Allow SEMSDevEnv.cmake to be read in with -C (#482)

For those that like to use -C instead of -DTrilinos_CONFIGURE_OPTIONS_FILE now
you can read this in with -C.  But you will need to provide the entire path
and can't provide a relative path like with
-DTrilinos_CONFIGURE_OPTIONS_FILE:STIRNG=<rel-path>.

cmake/std/sems/SEMSDevEnv.cmake

@@ -2,6 +2,20 @@
 # Base options for all SEMS Dev Env bulids for Trilinos
 #
 
+
+# Handle this being passed in with -C option instead of
+# <Project>_CONFIGURE_OPTIONS_FILE.
+IF ("${PROJECT_NAME}" STREQUAL "")
+  SET(PROJECT_NAME Trilinos)
+  FUNCTION(ASSERT_DEFINED VARS)
+    FOREACH(VAR ${VARS})
+      IF(NOT DEFINED ${VAR})
+        MESSAGE(SEND_ERROR "Error, the variable ${VAR} is not defined!")
+      ENDIF()
+    ENDFOREACH()
+  ENDFUNCTION()
+ENDIF()
+
 #
 # A) Define the compilers and basic env
 #