[Svnmerge] resolved Re. Transitive merging ( A -> B -> C) doesn't merge file contents?

[Mark Kempster]

After a bit more research, I was able to track the problem down to a
double-merge (A->B and A->C, then B->C complains), and lack of proper
modification of the svnmerge property. Totally and completely
biological in nature.

Apologies for the bandwidth suckage (and my mail setup, which seems to
have hosed my ability to receive mail from the list).

- Mark