Update, add and replace AviSynth plugins

Updated:
AddGrainC to v1.7.1
AutoGain to AutoAdjust v2.0
Average to v0.92 (https://github.com/AviSynth/Average)
Bass DLLs to latest version
DeSpot to v3.6.3.0
Deblock to v0.9 (https://github.com/AviSynth/Deblock)
Dither Avisynth tools to v1.25.1 (http://ldesoras.free.fr/prod.html#src_ditheravsi)
EEDI3 v0.9.2
FFMS2 to v2.19
LSMASHSource to r714-gf8890ff
MSharpen to v0.9 (https://github.com/AviSynth/msharpen)
O16mod to v2.2.0
RedAverage to v1.4.3
RemapFrames v0.4.1
SangNom2 v0.35 (https://github.com/AviSynth/SangNom2)
SmoothAdjust to v3.0
Vinverse to v0.9 (https://github.com/AviSynth/vinverse)
bifrost to v2.0
checkmate to v0.9 (https://github.com/AviSynth/checkmate)
dfttest v1.9.4
mvtools2 to v2.6.0.5
xy-VSFilter to version included in CCCP 2014-03-09

Added:
FTurn
MaskTools2 (https://github.com/AviSynth/masktools)
MedianBlur2
TColorMask
TMaskCleaner

Replaced:
RemoveGrain, Repair and VerticalCleaner with RgTools