Cleanup whitespace

[dirk-zimoch]

This is purely cosmetic:

1. There was a mess with tab character usage. Indention with spaces and tabs was mixed inconsistently sometimes with obviously different assumptions on tab width, even in the same file. This results in irregular, hard to read indents. Please stop using tabs in source code.
2. Clean up of space at end of line.
3. Clean up of empty lines at end of file.

[mdavidsaver]

I'll apply the changes to pvif.h, but not the changes to softMain.cpp. The later is a transplant from Base (3dbe94d) with minimal edits (243f039 and 266f2f9). Making cosmetic changes can only complicate taking future updates from Base (which could happen anytime).

[anjohnson]

... except he's proposing the same changes to Base. Unfortunately now is probably not the best time to do them since we have several branches outstanding and this complicates the merge.

BTW I'm in the middle of merging 3.15 into 7.0, can you avoid pushing anything into that branch until I'm done as it wasn't clean so needs lots of manual fixes and I don't know now to recover if the tip moves while I'm doing that...

[mdavidsaver]

he's proposing the same changes to Base.

Good. The flow I'd like is to change Base, and then update pva2pva from Base.

now is probably not the best time to do them

There is no good time, only the present time.