Update scripts for kernel jitterentropy validation

[jvdsn]

Please squash commits before merging.

This set of commits updates the scripts for kernel jitterentropy validation. The most important changes are:

• extractlsb now always calculates the time deltas from the timestamps in the input file
• extractlsb does not distinguish between var and single data streams anymore
• processdata.sh processes a very specific number of samples (time deltas): 1000 restarts of 1000 samples in the case of restart data, or 1000000 samples in the case of normal noise data. Any less data will cause an error to notify the user. Any more data will be ignored

[jvdsn]

I've been thinking if maybe we want to just merge the validation-restart-kernel and validation-runtime-kernel directories into one directory. The extractlsb files are virtually identical, and the script can be modified in such a way that it performs all the analysis required.

[smuellerDD]

Applied, thanks.