FoundationDB/sql-layer — pull request #1242 by nathanlws (2014-03-21 20:26:10+00:00)
Title: Fix exe upgrading

By ensuring no stale jars or executables are leftover.

This uses Inno Setup's `[InstallDelete]` feature, though fairly conservatively as we can narrow it to two directories deep. The other option would be actually invoke the uninstaller but that seems even more fragile and recommended against.