gui: add shortcut for goto line action in the editor and center the target line * file-editor.cc(construct): add shortcut Ctrl-G for goto line action * file-editor-tab.cc(center_current_line): new function, centering current line * file-editor-tab.cc(set_debugger_position): use center_current_line * file-editor-tab.cc(goto_line): call center_current_line only if goto_line was called from goto line action * file-editor-tab.h: new function center_current_line

#include "mex.h"

void
mexFunction (int nlhs, mxArray *plhs[], int nrhs, 
             const mxArray *prhs[])
{
  const char *nm;
  nm = mexFunctionName ();
  mexPrintf ("You called function: %s\n", nm);
  if (strcmp (nm, "myfunc") == 0)
    mexPrintf ("This is the principal function\n", nm);
  return; 
}