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

lib/ipcomm.cpp

@@ -3,6 +3,8 @@
 #include <QSharedMemory>
 #include <QSystemSemaphore>
 
+#include "../commons.h"
+
 // Multiple instances: KK1D, 17 Jul 2013
 QSharedMemory mem_jt9;
 
@@ -16,17 +18,13 @@ extern "C" {
   bool detach_jt9_();
   bool lock_jt9_();
   bool unlock_jt9_();
-  char* address_jt9_();
+  struct jt9com * address_jt9_();
   int size_jt9_();
 // Multiple instances:  wrapper for QSharedMemory::setKey()
   bool setkey_jt9_(char* mykey, int mykey_len);
 
   bool acquire_jt9_();
   bool release_jt9_();
-
-  extern struct {
-    char c[10];
-  } jt9com_;
 }
 
 bool attach_jt9_() {return mem_jt9.attach();}
@@ -34,7 +32,7 @@ bool create_jt9_(int nsize) {return mem_jt9.create(nsize);}
 bool detach_jt9_() {return mem_jt9.detach();}
 bool lock_jt9_() {return mem_jt9.lock();}
 bool unlock_jt9_() {return mem_jt9.unlock();}
-char* address_jt9_() {return (char*)mem_jt9.constData();}
+struct jt9com * address_jt9_() {return reinterpret_cast<struct jt9com *>(mem_jt9.data());}
 int size_jt9_() {return (int)mem_jt9.size();}
 
 // Multiple instances: