[GitSVN][NFC] Mark dry-run commits as such in the log output

[jdoerfert]

Summary

This helps to avoid worries about the "dry run flag" while testing.

[xbolva00]

llvm/utils/git-svn/git-llvm

604

Why?

[mehdi_amini]

LGTM (after you remove the typo)

[jdoerfert]

llvm/utils/git-svn/git-llvm

604

Random bit-flip ;)
Not intentional.

llvm/utils/git-svn/git-llvm

if dot_git_dir == '--git-common-dir':
         dot_git_dir = git('rev-parse', '--git-dir')
 
     svn_root = os.path.join(dot_git_dir, 'llvm-upstream-svn')
     svn_init(svn_root)
 
     rev_range = args.rev_range
     dry_run = args.dry_run
     revs = get_revs_to_push(rev_range)
-    log('Pushing %d %s commit%s:\n%s' %
-        (len(revs),
+    log('%sPushing %d %s commit%s:\n%s' %
+        ('[DryRun] ' if dry_run else '', len(revs),
          'split-repo (%s)' % split_repo_path
          if split_repo_path else 'monorepo',
          's' if len(revs) != 1 else '',
          '\n'.join('  ' + git('show', '--oneline', '--quiet', c)
                    for c in revs)))
     for r in revs:
         clean_svn(svn_root)
         svn_push_one_rev(svn_root, r, git_to_svn_mapping, dry_run)
parser_revert.add_argument(
         help='Revision to revert. Can either be an SVN revision number '
         "(rNNNNNN) or a git commit hash (anything that doesn't look "
         'like an SVN revision number).')
     parser_revert.add_argument(
         '-n',
         '--dry-run',
         dest='dry_run',
         action='store_true',
-        help='Do everything other than perform a revert. Prints the git '
+        help='Do everything other than perform a revert. Orints the git '
         'revert command it would have run.')
     parser_revert.set_defaults(func=cmd_revert)
 
     parser_svn_lookup = subcommands.add_parser(
         'svn-lookup', description=cmd_svn_lookup.__doc__,
         help='Find the llvm-svn revision for a given commit.')
     parser_svn_lookup.add_argument(
         'git_commit_hash',