[Clp] pdco bug

[ycollet at freesurf.fr]

For the compilation using Visual studio:
- I must add ClpLsqr.[ch]pp, ClpPdco.[ch]pp, ClpPdcoBase.[ch]pp,  
ClpPredictorCorrector.[ch]pp
- I must change a line in ClpLsqr.cpp:
     if (fmod(*itn,10) == 0  ) prnt = 1;
changed into due to ambiguity in prototypes
     if (fmod(*itn,10.0) == 0  ) prnt = 1;

YC