75291659ec3295fa36f639e78d4682c33ff3adbc putting functions related to extended preprocessor in ExternalFiles.cc

================================ DYNARE MAKE CHECK MATLAB RESULTS ================================ | TOTAL: 443 | PASS: 441 | FAIL: 0 | XFAIL: 2 | XPASS: 0

================================ DYNARE MAKE CHECK OCTAVE RESULTS ================================ | TOTAL: 441 | PASS: 439 | FAIL: 0 | XFAIL: 2 | XPASS: 0

A full log can be found on karaba in '/tmp/dynare-master-check-SHy3D1rwYb.log'.