* complete rewrite: now two separate phases, first search small base-m   decomposition, then estimate root properties * implemented naive rotation to improve root properties * there are some regressions in some cases wrt previous versions, but   altogether this version seems to behave better
* complete rewrite: now two separate phases, first search small base-m
  decomposition, then estimate root properties
* implemented naive rotation to improve root properties
* there are some regressions in some cases wrt previous versions, but
  altogether this version seems to behave better


git-svn-id: 189946a10c5fc96e9dd03ba7cba917cd4c3d09f4@185 de4796e2-0b1e-0410-91b4-86bc23549317

mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs