Up to i.Ftp...
- Fixed spurious crashes when using i.Ftp. The problem was just a compile option that I'd somehow got wrong just for release builds, so I couldn't understand why the debug version worked perfectly and the release build was so flaky. Anyway it should be good now.
- Improved the robustness of the crash handler. It now survives a lot better when being called with a corrupt heap. Basically this is the classic 'low memory' situation where you can't allocation any more memory.