freepie: once more, with feeling (tm)

- don't hand-code octet reversal
- don't check for endianness every iteration
- in flag_Raw case float[6] orient was being clobbered, use a temporary
- reset float[6]* orient ptr to null after usage
- don't special-case .apk sending too short dgrams

Thanks-to: @KyokushinPL
gitignore
make stuff private, not protected

clang generates warnings for unused private stuff, so use that.
options: move to base class for clarity
whitespace only
unbreak build, needs access from subclass
don't recalculate covariance for N frames like a drooling retard