Renamed Email ATTACHMENT into Email LOG, because the log can be echo-ed in the message as well.

tools/oneclick/base/modelsim_regression_test_vhdl.py

@@ -267,7 +267,7 @@ if hdl_args.run:
         run_time = end_time-start_time
         fp.write('# Email MESSAGE: Total regression test duration: %.1f seconds\n' % run_time)
 
-        fp.write('# Email ATTACHMENT: %s\n' % logFileNamePath)
+        fp.write('# Email LOG: %s\n' % logFileNamePath)
 
     # Echo the log file
     print '\n\ncat %s:\n' % logFileNamePath