Ensure 8-byte aligned memory allocation on MS-Windows 9X

* src/w32heap.c (init_heap): Redirect malloc, realloc, and free to
special functions on Windows 9X.  Refuse to dump Emacs on Windows 9X.
(malloc_after_dump_9x, realloc_after_dump_9x)
(free_after_dump_9x): New functions.  (Bug#22379)  See also
http://lists.gnu.org/archive/html/emacs-devel/2016-01/msg00852.html
for more details about the original problem.

* nt/inc/ms-w32.h (malloc_after_dump_9x, realloc_after_dump_9x)
(free_after_dump_9x): Add prototypes.

Copyright-paperwork-exempt: yes

1 files changed, 4 insertions, 0 deletions

diff --git a/nt/inc/ms-w32.h b/nt/inc/ms-w32.h
index cdbfac03c64..a37510e7457 100644
--- a/nt/inc/ms-w32.h
+++ b/nt/inc/ms-w32.h
@@ -457,6 +457,10 @@ extern void *malloc_after_dump(size_t);
 extern void *realloc_after_dump(void *, size_t);
 extern void free_after_dump(void *);
 
+extern void *malloc_after_dump_9x(size_t);
+extern void *realloc_after_dump_9x(void *, size_t);
+extern void free_after_dump_9x(void *);
+
 extern malloc_fn the_malloc_fn;
 extern realloc_fn the_realloc_fn;
 extern free_fn the_free_fn;