Fixing Default Thread Count Calculation

[Obscure2020]

As I discussed in #34, the Smooth Boot wiki states that Smooth Boot's default Main Worker Thread Count is 1/2 of total CPU threads. However, the auto-generated default value I found in my config .json was not consistent with this stated intention.

I suspected that the wiki stated the plan or intention, but the code was inconsistent with this plan, so I looked through the code to find where the default values were generated.

I found it.

I propose that we change the code to reflect the sensible plan set forth in the wiki.

[Obscure2020]

Closed as not planned to implement. As a side note, I no longer use Smooth Boot.