* include/cygwin/version.h: Bump DLL minor number to 8.

* cygmalloc.h: Make more concessions to attempts to get debugging malloc
working.
* debug.h: Ditto.
* dlmalloc.cc: Ditto.
* dlmalloc.h: Ditto.
* malloc_wrapper.cc: Ditto.
* perthread.h (perthread::create): Use calloc to ensure zeroed memory.

winsup/cygwin/debug.cc

@@ -7,6 +7,7 @@ Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
 details. */
 
 #include "winsup.h"
+#include <malloc.h>
 #include "sync.h"
 #include "sigproc.h"
 #include "pinfo.h"