IBM 386SLC/486SLC/486 Blue Lightning emulation

[nerd73]

This pull request adds preliminary emulation of the IBM SLC and Blue Lightning CPUs to various 286 and 386 PS/2 machines.

[darkstar]

the indenting looks horrible on this. Granted, some of this is because the original source already mixes tabs and spaces, but three different indentings (1 tab vs. 2 tabs vs. 8 spaces) in 3 consecutive lines? ;-)
719534c#diff-ab781aca9f2f3f40226effc08a525b77R263

[nerd73]

Thanks. I've done some indenting fixes and cleaned up the CPU tables a bit. The indenting seemed alright in Notepad++, but I guess GitHub uses a different tab length.

[ghost]

Lenghts in the 86Box code are a mess in general. A mixture of spaces and tabs. So it's fine at least for me.

[dhrdlicka]

The indenting in 86Box is 4 spaces for first level, 1 tab for second level, 2 tabs for third level and so on.

It might not hurt to agree on using something more consistent though.

@nerd73 is there any reason in particular why you commit the changes through the GitHub web interface and not via a local Git client?

[OBattler]

It might not hurt to agree on using something more consistent though.

I absolutely agree.