Includes in preprocessor,multiclass,structure,distance,clustering either removed or trasnferred to .cpp file.
Merge pull request #2652 from srgnuclear/pincludes

Includes in preprocessor, multiclass, structure, distance, clustering either removed or transferred to .cpp file.
io includes clean up - unwanted removed others shifted to .cpp file.

Error in build log fixed

squash of previous two commits

Build log errors fixed 2

squash - 2

Build log error fix.

squash 3
Merge pull request #2653 from srgnuclear/ioincludes

io includes clean up - unwanted removed others shifted to .cpp file.
add light-scrubber.sh to scripts