GLM bug fix.
GLM bug fix.

Response prior (if different from actual mean) was rewriting internal lastResult variable used during line search. Datasets which require line search in the first iteration then used wrong intercept and line search would often fail to progress (and glm would return just the null model). Added clone() to prevent array sharing between the model coefficients and lastResult variable.

elkingtonmcb/h2o-2,vbelakov/h2o,calvingit21/h2o-2,elkingtonmcb/h2o-2,eg-zhang/h2o-2,h2oai/h2o-2,h2oai/h2o,h2oai/h2o-2,rowhit/h2o-2,h2oai/h2o,elkingtonmcb/h2o-2,eg-zhang/h2o-2,rowhit/h2o-2,calvingit21/h2o-2,calvingit21/h2o-2,calvingit21/h2o-2,h2oai/h2o-2,elkingtonmcb/h2o-2,vbelakov/h2o,rowhit/h2o-2,elkingtonmcb/h2o-2,calvingit21/h2o-2,calvingit21/h2o-2,vbelakov/h2o,calvingit21/h2o-2,h2oai/h2o,rowhit/h2o-2,eg-zhang/h2o-2,vbelakov/h2o,h2oai/h2o-2,calvingit21/h2o-2,eg-zhang/h2o-2,rowhit/h2o-2,h2oai/h2o-2,h2oai/h2o,h2oai/h2o,111t8e/h2o-2,h2oai/h2o-2,eg-zhang/h2o-2,h2oai/h2o,111t8e/h2o-2,h2oai/h2o,eg-zhang/h2o-2,elkingtonmcb/h2o-2,eg-zhang/h2o-2,h2oai/h2o-2,h2oai/h2o-2,calvingit21/h2o-2,vbelakov/h2o,h2oai/h2o,vbelakov/h2o,rowhit/h2o-2,elkingtonmcb/h2o-2,111t8e/h2o-2,h2oai/h2o-2,rowhit/h2o-2,calvingit21/h2o-2,elkingtonmcb/h2o-2,vbelakov/h2o,111t8e/h2o-2,111t8e/h2o-2,h2oai/h2o,rowhit/h2o-2,h2oai/h2o,rowhit/h2o-2,111t8e/h2o-2,111t8e/h2o-2,elkingtonmcb/h2o-2,111t8e/h2o-2,eg-zhang/h2o-2,vbelakov/h2o,vbelakov/h2o,eg-zhang/h2o-2,111t8e/h2o-2,vbelakov/h2o,eg-zhang/h2o-2,rowhit/h2o-2,h2oai/h2o-2,elkingtonmcb/h2o-2,111t8e/h2o-2