[Clp] warmstarting problems

[John Forrest]

 From scratch the code is using dual, while from a warmstart it will use 
primal.  I have been looking at badly scaled problems in primal.  Taking 
some of that code and modifying ClpSimplexPrimal.cpp in Clp.1.17.6, the 
first example solves in under two minutes.

I attach the code for you to try.  Really the #define CLP_MOVEMENT 1 
should be in configuration, but it should make it easier for you to try.

John Forrest

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