* Progress with the 'verbose' option of detrend.series(). Output
  somewhat reformatted.

* detrend.series() has new option 'return.info' for including similar
  information as printed with 'verbose = TRUE' in the return value.
  This option is not (yet) implemented in detrend(). Andy: Currently
  there is more information (about uncertainty of model coefficients)
  returned with 'return.info = TRUE' than printed with 'verbose =
  TRUE'.


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/dplr@813 edb9625f-4e0d-4859-8d74-9fd3b1da38cb