Fix matching for redirect after login from another project, for a special case where one project name (referrer) was a substring of the other (project for login).
Fix matching for redirect after login from another project, for a special case where one project name (referrer) was a substring of the other (project for login).

Closes #3048.

git-svn-id: 0d96b0c1a6983ccc08b3732614f4d6bfcf9cbb42@6279 af82e41b-90c4-0310-8c96-b1721e28e2e2

rbaumg/trac,rbaumg/trac,rbaumg/trac,rbaumg/trac