update test-help output after new options.
--- a/tests/test-help.out
+++ b/tests/test-help.out
@@ -136,6 +136,7 @@ options:
-I --include include names matching the given patterns
-X --exclude exclude names matching the given patterns
+ -n --dry-run do not perform actions, just print output
hg add: option --skjdfks not recognized
hg add [OPTION]... [FILE]...
@@ -151,6 +152,7 @@ options:
-I --include include names matching the given patterns
-X --exclude exclude names matching the given patterns
+ -n --dry-run do not perform actions, just print output
hg diff [-a] [-I] [-X] [-r REV1 [-r REV2]] [FILE]...
diff repository (or selected files)