You may want to look at svnmerge (which ships with Subversion). It makes it work similar to the way git does (that merlyn mentions above). There's a good tutorial on it.
Comment on Re: [OT] Best Use of Subversion Branches in Perl Development
You know what, I checked it out and it doesn't even come close. It's merging is extremely deficient compared with even svk and merges were complicated and painful. However, it does support tracking cherry picking which is more than svk.