There is an easy way of integrating bugtracking tools into tortoise svn using properties.
Just add following properties to your working copy (don’t forget to apply them recursively):
-bugtraq:url (enables link to bugtracker and shows Bug-Id column in tortoise)
-bugtraq:message (enables Bug-Id input field on commit)



Defect:  %BUGID%.

%BUGID% is replaced with the issue number you entered on commit.

For more details see the tortoise documention.