UFconfig contains configuration settings for all many of the software packages
that I develop or co-author.  Note that older versions of some of these packages
do not require UFconfig.

  Package  Description
  -------  -----------
  AMD	   approximate minimum degree ordering
  CAMD	   constrained AMD
  COLAMD   column approximate minimum degree ordering
  CCOLAMD  constrained approximate minimum degree ordering
  UMFPACK  sparse LU factorization, with the BLAS
  CXSparse int/long/real/complex version of CSparse
  CHOLMOD  sparse Cholesky factorization, update/downdate
  KLU	   sparse LU factorization, BLAS-free
  BTF	   permutation to block triangular form
  LDL	   concise sparse LDL'
  LPDASA   LP Dual Active Set Algorithm

UFconfig is not required by:

  CSparse		    a Concise Sparse matrix package
  RBio			    read/write files in Rutherford/Boeing format
  UFcollection		    tools for managing the UF Sparse Matrix Collection

In addition, the xerbla/ directory contains Fortan and C versions of the
BLAS/LAPACK xerbla routine, which is called when an invalid input is passed to
the BLAS or LAPACK.  The xerbla provided here does not print any message, so
the entire Fortran I/O library does not need to be linked into a C application.
Most versions of the BLAS contain xerbla, but those from K. Goto do not.  Use
this if you need too.