Get rid of jt9com and npar common blocks

Also  use correct  C binding  and have  compilers determine  sizes and
offsets.

The wsjtx.exe program now owns the  decoder shared data that is shared
with symspec.  It is now in  struct dec_data, still a  global variable
for now but hopefully a MainWindow member variable soon.

The struct  dec_data (in both C/C++  and Fortran) has a  sub structure
with the decoder  parameters which enables copying  and manipulating a
lot cleaner.

New  of  changed types  of  shared  data  must  still be  modified  in
commons.h and a  new file lib/jt9com.f90, they must stay  in sync as a
pointer to the structure is passed between C and Fortran.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6290 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

plotter.cpp

@@ -1,6 +1,7 @@
 #include "plotter.h"
 #include <math.h>
 #include <QDebug>
+#include "commons.h"
 
 #include "moc_plotter.cpp"
 
@@ -130,7 +131,7 @@ void CPlotter::draw(float swide[], bool bScroll)                            //dr
 
   if(bScroll) {
     flat4_(swide,&iz,&m_Flatten);
-    flat4_(&jt9com_.savg[j0],&jz,&m_Flatten);
+    flat4_(&dec_data.savg[j0],&jz,&m_Flatten);
   }
 
   ymin=1.e30;
@@ -157,7 +158,7 @@ void CPlotter::draw(float swide[], bool bScroll)                            //dr
       float sum=0.0;
       int j=j0+m_binsPerPixel*i;
       for(int k=0; k<m_binsPerPixel; k++) {
-        sum+=jt9com_.savg[j++];
+        sum+=dec_data.savg[j++];
       }
       m_sum[i]=sum;
     }