Make nonfatal warning hint more explicit.

juDFT/stop.F90

@@ -144,7 +144,7 @@ CONTAINS
        WRITE(0,'(2a)') "*****************************************"
 
        IF (.NOT.warn) CALL juDFT_time_lastlocation()
-       IF (callstop.and.warn) WRITE(0,'(a)')"Warnings not ignored. Touch 'JUDFT_WARN_ONLY' to make the warning nonfatal"
+       IF (callstop.and.warn) WRITE(0,'(a)')"Warnings not ignored. To make the warning nonfatal create a file 'JUDFT_WARN_ONLY' in the working directory or start FLEUR with the -warn_only command line option."
        IF (callstop) THEN
           CALL writetimes()
           CALL print_memory_info(0,.TRUE.)