Add proc type

[xairy]

No description provided.

[dvyukov]

Please extend this description. It is very non-obvious type. I doubt that anybody expect me and you understand what it does.
A usage example may help.

[dvyukov]

Please write some meaningful commit description. There are people who read them.
Also prefix commit with package name: "sys: add proc type".

[dvyukov]

Why "- 1"? Does not look correct to me. Should crash if ValuesPerProc==1.

[dvyukov]

Alex uses 20 procs. Let's make the max 32. And check that procs parameter <= 32 in config package.

[dvyukov]

pid should be an argument to ipc.MakeEnv.
We've discussed that we may need to pass pid to executor to setup network card, etc.
MakeEnv looks like the right place for pid long term.

[xairy]

All done.

Note, that the old way to generate ports is still used when generating inaddrs.
I'll move it to syscall templates.

[dvyukov]

looks good to me