Updated help strings and test-help: - options -I/-X: always at the end, don't include them in the synopsis. - NAME is optional for hg revert - other small changes.

diff -r 3903775176ed b
--- /dev/null
+++ b/b
@@ -0,0 +1,1 @@
+123
diff -r 3903775176ed b
--- /dev/null
+++ b/b
@@ -0,0 +1,1 @@
+123