Version 0.7b - compatibility improved and forgotten things

Changelog:

        - fixed stuck at max scaling frequency when using stock kernel sources with unmodified cpufreq driver and without any oc capabilities.
        - readded forgotten frequency search optimisation in scaling logic (only effective when using governor soft frequency limit)
        - readded forgotten minor optimisation in dbs_check_cpu function
        - as forgotten to switch in last version Legacy Mode now again disabled by default
        - minor code format and comment fixes