ECGroup, ECGroupElement, ECGroupFp, SafeECGroupFp with Domainparameters
from sec 2 2010 with example under math.group
Calculations are very slow...
Add Tonelli_Shank algo to MathUtil for sqrtMod_p
Changes in ECGroup Field to FiniteField and in ECGroupFp and
SafeECGroupFp to ZModPrime
Minor corrections on ECGrouFp getRandomElement and constructor without
passed generator
Merge branch 'master' of https://github.com/bfh-evg/unicrypt.git