Centralise includes and extern declarations to visible for mod2c (#81)

- update mod2c
- externs update

Author: fouriaux

coreneuron/mech/mod2c_core_thread.h

@@ -103,6 +103,13 @@ typedef struct SparseObj {  /* all the state information */
     int do_flag;
 } SparseObj;
 
+#pragma acc routine seq
+extern double* _nrn_thread_getelm(SparseObj* so, int row, int col, int _iml);
+
+extern void* nrn_cons_sparseobj(SPFUN, int, Memb_list*, _threadargsproto_);
+
+extern void _nrn_destroy_sparseobj_thread(SparseObj* so);
+
 #pragma acc routine seq
 extern int nrn_kinetic_steer(int, SparseObj*, double*, _threadargsproto_);
 #define spfun(arg1, arg2, arg3) nrn_kinetic_steer(arg1, arg2, arg3, _threadargs_);

coreneuron/nrniv/nrniv_decl.h

@@ -35,6 +35,7 @@ THE POSSIBILITY OF SUCH DAMAGE.
 #include "coreneuron/utils/endianness.h"
 #include "coreneuron/nrniv/nrnoptarg.h"
 
+extern int cvode_active_;
 /// Vector of maps for negative presyns
 extern std::vector<std::map<int, PreSyn*> > neg_gid2out;
 /// Maps for ouput and input presyns

coreneuron/scopmath_core/sparse_thread.c

@@ -98,9 +98,6 @@ static void prmat(SparseObj* so);
 static void initeqn(SparseObj* so, unsigned maxeqn);
 static void free_elm(SparseObj* so);
 static Elm* getelm(SparseObj* so, unsigned row, unsigned col, Elm* new_elem);
-#pragma acc routine seq
-double* _nrn_thread_getelm(SparseObj* so, int row, int col, int _iml);
-void* nrn_cons_sparseobj(SPFUN, int, Memb_list*, _threadargsproto_);
 static void create_coef_list(SparseObj* so, int n, SPFUN fun, _threadargsproto_);
 static void init_coef_list(SparseObj* so, int _iml);
 static void init_minorder(SparseObj* so);
@@ -119,7 +116,6 @@ static void myfree(void*);
 static void check_assert(SparseObj* so);
 static void re_link(SparseObj* so, unsigned i);
 static SparseObj* create_sparseobj();
-void _nrn_destroy_sparseobj_thread(SparseObj* so);
 
 #if defined(_OPENACC)
 #undef emalloc