chg: toward ring-indep. numbers
changed test due to diffrent currRing handling
chg: get rid of PrimePowerDomain
chg: deleted unused getmpi
removed isSqrFree
chg: keep exponents positive in convex dense (de)compression
chg: disable asserts
chg: use NTL/FLINT in *=
fix: segfault in ezgcd
chg: added test for segfault in ezgcd
fix: format
fix: make check test of factory without Singular
fix: standalone build of factory
chg: use NTL/FLINT also in operator /=
chg: update test results for Short/factorizeQ_s.tst