Cleaned out the last traces of the gsort task

src/cell.h

@@ -101,8 +101,8 @@ struct cell {
   struct gpart *gparts;
 
   /* Pointers for the sorted indices. */
-  struct entry *sort, *gsort;
-  unsigned int sorted, gsorted;
+  struct entry *sort;
+  unsigned int sorted;
 
   /* Pointers to the next level of cells. */
   struct cell *progeny[8];
@@ -114,8 +114,8 @@ struct cell {
   struct cell *super;
 
   /* The task computing this cell's sorts. */
-  struct task *sorts, *gsorts;
-  int sortsize, gsortsize;
+  struct task *sorts;
+  int sortsize;
 
   /* The tasks computing this cell's density. */
   struct link *density, *gradient, *force, *grav;

src/runner.h

@@ -29,26 +29,27 @@ extern const char runner_flip[27];
 struct cell;
 struct engine;
 
-/* A struct representing a runner's thread and its data. */
+/**
+ * @brief A struct representing a runner's thread and its data.
+ */
 struct runner {
 
-  /* The id of this thread. */
+  /*! The id of this thread. */
   int id;
 
-  /* The thread which it is running. */
+  /*! The actual thread which it is running. */
   pthread_t thread;
 
-  /* The queue to use to get tasks. */
+  /*! The queue to use to get tasks. */
   int cpuid, qid;
 
-  /* The underlying runner. */
+  /*! The engine owing this runner. */
   struct engine *e;
 };
 
 /* Function prototypes. */
 void runner_do_ghost(struct runner *r, struct cell *c);
 void runner_do_sort(struct runner *r, struct cell *c, int flag, int clock);
-void runner_do_gsort(struct runner *r, struct cell *c, int flag, int clock);
 void runner_do_kick(struct runner *r, struct cell *c, int timer);
 void runner_do_kick_fixdt(struct runner *r, struct cell *c, int timer);
 void runner_do_init(struct runner *r, struct cell *c, int timer);