Merge pull request #1462 from jedwards4b/fix_for_quoted_args

in _check_for_invalid_args ignore quoted strings

If there is a space in an argument then it was quoted in the shell and should be ignored in this test.

Test suite: ./xmlchange --id CLM_BLDNML_OPTS --val "-bgc bgc -crop -irrig=.true."
Test baseline:
Test namelist changes:
Test status: bit for bit
Fixes #1460

User interface changes?:

Code review:

scripts/lib/CIME/utils.py

@@ -1238,7 +1238,8 @@ def run_and_log_case_status(func, phase, caseroot='.'):
 
 def _check_for_invalid_args(args):
     for arg in args:
-        if arg.startswith("--"):
+        # if arg contains a space then it was originally quoted and we can ignore it here.
+        if " " in arg or arg.startswith("--"):
             continue
         if arg.startswith("-") and len(arg) > 2:
             if arg == "-value" or arg == "-noecho":