[RFA 4/8] validate_failures.py: rename --manifest to --manifest_path

[Doug Evans]

Hi.
This fourth patch renames option --manifest to --manifest_path.
I have a later patch that adds a --manifest_name option, making "--manifest"
too confusing/ambiguous.

Ok to check in?
[I still have to update invocations that use --manifest,
but that's a separate patch.]

2012-11-24  Doug Evans  <dje@google.com>

	* testsuite-management/validate_failures.py: Rename option --manifest to
	--manifest_path.  Rename local variables manifest_name to manifest_path.

--- validate_failures.py=	2012-11-19 11:47:29.997632548 -0800
+++ validate_failures.py	2012-11-24 13:31:29.770809999 -0800
@@ -211,7 +211,7 @@ def ParseSummary(sum_fname):
   return result_set
 
 
-def GetManifest(manifest_name):
+def GetManifest(manifest_path):
   """Build a set of expected failures from the manifest file.
 
   Each entry in the manifest file should have the format understood
@@ -220,8 +220,8 @@ def GetManifest(manifest_name):
   If no manifest file exists for this target, it returns an empty
   set.
   """
-  if os.path.exists(manifest_name):
-    return ParseSummary(manifest_name)
+  if os.path.exists(manifest_path):
+    return ParseManifest(manifest_path)
   else:
     return set()
 
@@ -326,14 +326,14 @@ def CheckExpectedResults(options):
     (srcdir, target, valid_build) = GetBuildData(options)
     if not valid_build:
       return False
-    manifest_name = _MANIFEST_PATH_PATTERN % (srcdir, target)
+    manifest_path = _MANIFEST_PATH_PATTERN % (srcdir, target)
   else:
-    manifest_name = options.manifest
-    if not os.path.exists(manifest_name):
-      Error('Manifest file %s does not exist.' % manifest_name)
+    manifest_path = options.manifest
+    if not os.path.exists(manifest_path):
+      Error('Manifest file %s does not exist.' % manifest_path)
 
-  print 'Manifest:         %s' % manifest_name
-  manifest = GetManifest(manifest_name)
+  print 'Manifest:         %s' % manifest_path
+  manifest = GetManifest(manifest_path)
   sum_files = GetSumFiles(options.results, options.build_dir)
   actual = GetResults(sum_files)
 
@@ -349,14 +349,14 @@ def ProduceManifest(options):
   if not valid_build:
     return False
 
-  manifest_name = _MANIFEST_PATH_PATTERN % (srcdir, target)
-  if os.path.exists(manifest_name) and not options.force:
+  manifest_path = _MANIFEST_PATH_PATTERN % (srcdir, target)
+  if os.path.exists(manifest_path) and not options.force:
     Error('Manifest file %s already exists.\nUse --force to overwrite.' %
-          manifest_name)
+          manifest_path)
 
   sum_files = GetSumFiles(options.results, options.build_dir)
   actual = GetResults(sum_files)
-  manifest_file = open(manifest_name, 'w')
+  manifest_file = open(manifest_path, 'w')
   for result in sorted(actual):
     print result
     manifest_file.write('%s\n' % result)
@@ -406,8 +406,8 @@ def Main(argv):
                     'that the expected failure has been fixed, or '
                     'it did not run, or it may simply be flaky '
                     '(default = False)')
-  parser.add_option('--manifest', action='store', type='string',
-                    dest='manifest', default=None,
+  parser.add_option('--manifest_path', action='store', type='string',
+                    dest='manifest_path', default=None,
                     help='Name of the manifest file to use (default = '
                     'taken from contrib/testsuite-managment/<target>.xfail)')
   parser.add_option('--produce_manifest', action='store_true',