0.9.2

- Updated seed nodes
- Logo & splash screen changes
- Increase default dbcache to 100MB
- Add check for valid keys in 'importprivkey'
- Fix infiinite loop with LogPrint on Windows
- Add ThreadMyExternalP to net thread group
- Add rpc command 'getunconfirmedbalance'
- Prevent empty transactions from being added to vtxPrev
- Silence useless warning in src/json/json_spirit_writer_template.h
- Update intro.cpp & intro.h from upstream
- Disconnect client if invalid strSubVer is found
- Make time facet non-constant
- Minor miner fixes
- Added checkpoint @ block #118973