[Semi-OT] Build versioning strategies

[Monkeyden]

It is Friday, after all.  I'm looking to simplify the QA handoff and defect
tracking, so I wondered what the other readers have employed for build
version strategies.  We're currently using Ant, but may move to Maven down
the road.  I have heard (perhaps on this list) of people using Ant to read a
text file for the last build number, execute the build process, increment
the number and write it back.  Is there a more elegant solution?