bugfix: :set_perms_for_mongrel_dirs - don't fail if log files do not exist (e.g initial deployment) - call this function from :after_symlink task instead of :after_update as some tasks (like :deploy_with_migrations) updated code without calling the :update task.
bugfix: :set_perms_for_mongrel_dirs
- don't fail if log files do not exist (e.g initial deployment)
- call this function from :after_symlink task instead of :after_update as some tasks (like :deploy_with_migrations) updated code without calling the :update task.

git-svn-id: 0d33e6f6e41b2d8f20308dc5448449f229f93212@53 479ab18a-db23-0410-b897-fa3724b950b0

saimonmoore/deprec,saimonmoore/deprec,sauliusgrigaitis/centostrano,sauliusgrigaitis/centostrano,sauliusgrigaitis/centostrano,saimonmoore/deprec,saimonmoore/deprec