- check to see if the .onLoad function to require the methods package
  (in the AllClass.R file) is needed
  -- no, it is not:  "Depends: " in DESCRIPTION suffices.

- Should the uplo and diag slots continue to be stored as character?
  An alternative is to use a factor as in the enum values for the
  cblas.
  -- Leave as character but use care in determining the default cases
  -- E.g. Checks for diag slot should check for 'U' or 'u' vs. anything else

- Organization of the source code files - right now they are organized
  according to class (e.g. dgeMatrix.R, dgeMatrix.h, dgeMatrix.c).  Is
  there a better way?
  -- This seems ok.

- Fix the calculation of the Dim slot for the crossprod method for
  dgCMatrix objects (too tired to do that now).
  -- Done

- spelling style: Should "coersion" be "coercion" ?
  -- Yes.  Watch for this.

- src/Metis/ : one of the two Makefiles needs fixing, as changing
	     src/Metis/*.c  does not lead to recompilation.
  --DB - it seems both Makefiles need fixing.  I think I have the
	     src/Metis/Makefile fixed but not src/Makefile
  --DB - now have both working, I believe.

- man/Matrix.Rd :  has example with dimnames, but we just drop them!
		MM thinks dimnames should be supported (but then ...)
  -- added 'Dimnames' slot (2005-02-10)

- bCrosstab(): yes, we really do want the diagonal "V:V" crosstabs.
   -- explained a bit more in man/bCrosstab.Rd

- Clean up vestigial functions (pdFactor, pdMatrix, matrix<-) from the
  nlme package.

- create a class of permutation matrices for use in expand.  The
  current expand method for the LU factorization is not complete
  because it does not provide the permutation.

- tcrossprod() now works: C code now "exported" via init.c