* cygheap.h (init_cygheap): Move bucket array here from cygheap.cc.

* cygheap.cc: Throughout use bucket array from cygheap.
* sigproc.cc (proc_subproc): Dynamically allocate zombie buffer to save DLL
space.
(sigproc_fixup_after_fork): Free zombie array after a fork.
* sigproc.h (sigproc_fixup_after_fork): Declare.
* dir.cc (mkdir): Expand buffer for security descriptor to 4K to avoid stack
corruption.
* fhandler.cc (fhandler_base::open): Ditto.
* path.cc (symlink): Ditto.

winsup/cygwin/cygheap.h

@@ -152,6 +152,7 @@ struct cwdstuff
 struct init_cygheap
 {
   _cmalloc_entry *chain;
+  char *buckets[32];
   cygheap_root root;
   cygheap_user user;
   mode_t umask;