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Iterative Solver Template Library (sounds like something big ...)

I started with the vectors. It is not ready yet, don't use it.
Explanations follow...

Peter

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,,multiple instance'' linker errors

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* added an Interface to create a SuperMatrix
  (only available if HAVE_SUPERLU is defined... autoconf test will follow)

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be const.

If I broke anything with this commit, I don't feel too sorry. Keeping
this as it is could give us much trouble in the future.

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fastquad/gausquadimp.*

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and the linker is confused.

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added here. SimpleGrid should be usable again.

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written.

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