[Rd] Reorganization of packages in the R distribution

[Prof Brian Ripley]

After long but intermittent discussion (it was mentioned at DSC99, for
example), we have reorganized the standard packages, with

  base graphics stats utils methods

normally loaded,

  mle splines stepfun tcltk tools

available for loading, and

  ctest eda lqs modreg mva nls ts

as stub packages which ensure back-compatibility.  (These have all been
merged into stats except lqs which rejoins rlm in MASS.)

There are a small number of CRAN packages that attempt to modify system
functions and so will need updating.  (Known examples are in dse:tframe,
gregmisc and mclust and some testing code elsewhere.)

What will happen about datasets is currently under discussion.  These are
split between base and stats for historical reasons, except that all time
series datasets (and ts and its methods) are now in stats.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595