Print warning message after branch creation to update workspace

Fixed typo. Still untested.

Well, this works, but sadly:

A) The messages are generated for each directory you're branching, and

B) The messages are printed *before* all the output from the tag itself.

So, on big directory trees, it's still possible to miss it. Here's test output from tagging contributions/modules/signup on the p.d.o CVS repo:

$ cvs tag -b DRUPAL-6--1
** NOTE: Don't forget that creating a branch does NOT
** automatically update your workspace to use that branch.
** If you want to commit to this new branch, you must run:
** cvs update -r DRUPAL-6--1
** NOTE: Don't forget that creating a branch does NOT
** automatically update your workspace to use that branch.
** If you want to commit to this new branch, you must run:
** cvs update -r DRUPAL-6--1
** NOTE: Don't forget that creating a branch does NOT
** automatically update your workspace to use that branch.
** If you want to commit to this new branch, you must run:
** cvs update -r DRUPAL-6--1
** NOTE: Don't forget that creating a branch does NOT
** automatically update your workspace to use that branch.
** If you want to commit to this new branch, you must run:
** cvs update -r DRUPAL-6--1
** NOTE: Don't forget that creating a branch does NOT
** automatically update your workspace to use that branch.
** If you want to commit to this new branch, you must run:
** cvs update -r DRUPAL-6--1
** NOTE: Don't forget that creating a branch does NOT
** automatically update your workspace to use that branch.
** If you want to commit to this new branch, you must run:
** cvs update -r DRUPAL-6--1
** NOTE: Don't forget that creating a branch does NOT
** automatically update your workspace to use that branch.
** If you want to commit to this new branch, you must run:
** cvs update -r DRUPAL-6--1
** NOTE: Don't forget that creating a branch does NOT
** automatically update your workspace to use that branch.
** If you want to commit to this new branch, you must run:
** cvs update -r DRUPAL-6--1
** NOTE: Don't forget that creating a branch does NOT
** automatically update your workspace to use that branch.
** If you want to commit to this new branch, you must run:
** cvs update -r DRUPAL-6--1
** NOTE: Don't forget that creating a branch does NOT
** automatically update your workspace to use that branch.
** If you want to commit to this new branch, you must run:
** cvs update -r DRUPAL-6--1
cvs tag: Tagging .
T CHANGELOG.txt
T INSTALL.txt
T README.txt
T UPGRADE.txt
T signup.css
T signup.info
T signup.install
T signup.module
cvs tag: Tagging contrib
cvs tag: Tagging contrib/signup_conflicts
cvs tag: Tagging contrib/signup_ecommerce
cvs tag: Tagging includes
T includes/admin.settings.inc
T includes/admin.signup_administration.inc
T includes/broadcast.inc
T includes/cron.inc
T includes/date.inc
T includes/event.6x-2.inc
T includes/no_views.inc
T includes/node_admin.inc
T includes/node_admin_summary.inc
T includes/node_form.inc
T includes/node_output.inc
T includes/node_settings.inc
T includes/scheduler.inc
T includes/signup_cancel_form.inc
T includes/signup_form.inc
T includes/token_help.inc
cvs tag: Tagging js
T js/admin.content_types.js
T js/admin.settings.js
T js/node_form.js
cvs tag: Tagging panels
T panels/README.txt
cvs tag: Tagging panels/content_types
T panels/content_types/signup_form.inc
cvs tag: Tagging po
cvs tag: Tagging theme
T theme/README.txt
T theme/admin.inc
T theme/email.inc
T theme/no_views.inc
T theme/node.admin.inc
T theme/node.inc
T theme/signup_form.inc
cvs tag: Tagging translations
T translations/da.po
T translations/de.po
T translations/es.po
T translations/fr.po
T translations/ja.po
T translations/nb.po
T translations/signup.pot
cvs tag: Tagging views
T views/README.txt
T views/signup.views.inc
T views/signup.views_default.inc
cvs tag: Tagging views/handlers
T views/handlers/signup_handler_argument_signup_user_uid.inc
T views/handlers/signup_handler_field_signup_send_confirmation.inc
T views/handlers/signup_handler_field_signup_status.inc
T views/handlers/signup_handler_field_signup_user_email.inc
T views/handlers/signup_handler_field_signup_user_form_data.inc
T views/handlers/signup_handler_filter_boolean.inc
T views/handlers/signup_handler_filter_signup_disabled.inc
T views/handlers/signup_handler_filter_signup_status.inc
T views/handlers/signup_handler_filter_signup_user_authenticated.inc
cvs tag: Tagging views/plugins
T views/plugins/signup_plugin_argument_validate_signup_status.inc

Committed to HEAD, DRUPAL-5, and deployed on cvs.d.o.