Make Prediction lerping less pick + debug

- Lerping uses int rather than fixed/float comparisons
- Added debug information
Merge branch 'LerpAdjustments' of https://github.com/Edward850/zdoom
Merge branch 'fix_acs_big_endian' of https://github.com/alexey-lysiuk/gzdoom
- Fixed: BUDDHA flag on a player wasn't considered.
- Added FOILBUDDHA check for A_BFGSpray.
- Fixed: Rail attacks didn't properly respect FOILINVUL.

- Added: FOILBUDDHA support for rail attacks.
- Fixed typo on WARPF_ABSOLUTEPOSITION
In fact, let's go ahead and ensure compatibility doesn't break since it's already in there.
Backport 'A_FaceConsolePlayer' from zandronum.

By Dusk, who authorized me to do this.
Merge branch 'faceconsoleplayer' of https://github.com/edward-san/zdoom
Revert "Backport 'A_FaceConsolePlayer' from zandronum."

This reverts commit eab971500b43b6bac77af29aec1c299d68f2710e.

As Edward850 pointed out, this feature is broken by design and therefore completely useless.
Merge branch 'master' of https://github.com/rheit/zdoom into osx