rm: libfac/Factor.* libfac/MVMultiHensel.* libfac/SqrFree.* libfac/homogfactor.* libfac/test.cc
rm: factor/Truefactor.* factor/class.*
chg: handling of SW_RATIONAL in case of a finite field
chg: replaced getAlgVar by hasFirstAlgVar
chg: make igcd and ipower public
chg: replaced gcd0 by igcd
Merge pull request #559 from mmklee/libfac

Libfac