lmrob.lar now returns a list with full names.

coefficients instead of coef, residuals instead of resid.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/robustbase@559 694ef91d-65df-0310-b7bb-92e67a308ead
Added robust R squared to summary of lmrob().

- R squared implemented as suggested as in Renaud, O. & Victoria-Feser,
M.-P. (2010).

- Added a FIXME: .vcov.w does not reduce to classical estimates when psi
functions with large tuning constants are used. A test of this can be found
in tests/Rsquared.R.

- Improvements to the code here and there (lmrob.MM.R).

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/robustbase@560 694ef91d-65df-0310-b7bb-92e67a308ead