Coding style cleanup

Fix the following issues reported by pylint:

C0321: More than one statement on a single line
W0622: Redefining built-in 'name'
W0612: Unused variable 'name'
W0613: Unused argument 'name'
W0102: Dangerous default value 'value' as argument
W0105: String statement has no effect

Also fixed a few cases of inconsistent indentation.

Change-Id: Ie0db839e7c57d576cff12d8c055fe87030d00744
diff --git a/subcmds/start.py b/subcmds/start.py
index 0088507..be64531 100644
--- a/subcmds/start.py
+++ b/subcmds/start.py
@@ -52,10 +52,10 @@
         print >>sys.stderr, "error: at least one project must be specified"
         sys.exit(1)
 
-    all = self.GetProjects(projects)
+    all_projects = self.GetProjects(projects)
 
-    pm = Progress('Starting %s' % nb, len(all))
-    for project in all:
+    pm = Progress('Starting %s' % nb, len(all_projects))
+    for project in all_projects:
       pm.update()
       # If the current revision is a specific SHA1 then we can't push back
       # to it so substitute the manifest default revision instead.