[BUG] Fix bug introduced yesterday, fix FFT conv optimization and small pydotprint fix.

no news
- fix a test in FAST_COMPILE
- fix the fft conv optimizer to have higher prio then the default gpu conv optimizer.
- fix bug introduced yesterday in an optimization.

news.txt
internal, added LocalSequenceDB and LocalSeqOptimizer (Frederic B.)

Can't we have some sort of priority order like dnn -> fft -> gemm (where dnn and fft are only tried if enabled).

Then they could all be written as optimizers that work on GpuConv rather than having to redo the transfer tracking code.