Quality-of-life improvements (automatic calculation of RAM and plot size)

[Kristian-Popov]

Good evening!
In a current form it is not easy to plot a huge drive since one has to calculate a number of nonces and RAM manually and then form file name.
omdcct allows simplified process:

• if amount of nonces is not given, use most of a drive space (minus 5 GB IIRC)
• if buffer size is not given, use some percentage

These changes greatly simplify using a plotter.
I believe implementing an alternate syntax (e.g. compatible with omdcct since community is more or less familiar with it) would be great.

Any suggestions?

Best regards,
Kristian Popov