move l2r_lr_fun::get_diagH(double *M) to an earlier place to be consistent with l2r_l2_svc_fun::get_diagH(double *M)
move l2r_lr_fun::get_diagH(double *M) to an earlier place to be consistent
with l2r_l2_svc_fun::get_diagH(double *M)

cjlin1/liblinear,cjlin1/liblinear,cjlin1/liblinear,cjlin1/liblinear