Update oc_rlvsuite.lsl bitmaphandling

Correct off by one bitshift and improve bitpos and bitvalue handling for restriction bitmaps. 
Removed float llPow and llLog10 from bitmask calculations and use bitshift operators instead.
Consistently use bit numberings starting from 0, bit number always equals bitshift, corresponding to a value of 1<<bit or 2^bit.
Corrected bitmask values for Stray.