they are much faster than UInt::Rcl2(1,c) and Rcr2(1,c)
changed: UInt::Rcl() and UInt::Rcr()
we don't longer make the things with moving a half in the left and a half in the right
we simply use Rcl2_one() and Rcl2() /Rcr2_one() and Rcr2()/
git-svn-id: svn://ttmath.org/publicrep/ttmath/trunk@84 e52654a7-88a9-db11-a3e9-0013d4bc506e