reachable.hon commit builtin.h: take over documentation from api-builtin.txt (ec14d4e)
   1#ifndef REACHEABLE_H
   2#define REACHEABLE_H
   3
   4struct progress;
   5extern int add_unseen_recent_objects_to_traversal(struct rev_info *revs,
   6                                                  timestamp_t timestamp);
   7extern void mark_reachable_objects(struct rev_info *revs, int mark_reflog,
   8                                   timestamp_t mark_recent, struct progress *);
   9
  10#endif