Update to latest mercurial snapshot (bz 1392563).

Also:
- Drop upstreamed -gcc5 patch.
- Rebase all other patches.
- Update config.guess and config.sub.

clisp-linux.patch

@@ -1,14 +1,5 @@
---- ./modules/bindings/glibc/linux.lisp.orig	2013-02-16 15:26:27.868519829 -0700
-+++ ./modules/bindings/glibc/linux.lisp	2013-02-16 16:54:18.702524668 -0700
-@@ -87,7 +87,7 @@
- 
- (def-c-type __key_t)            ; int
- 
--(c-lines "#include <bits/ipctypes.h>~%")
-+(c-lines "#include <sys/ipc.h>~%")
- (def-c-type __ipc_pid_t)        ; ushort
- 
- ; --------------------------- <sys/types.h> -----------------------------------
+--- modules/bindings/glibc/linux.lisp.orig	2016-11-11 08:56:50.548677286 -0700
++++ modules/bindings/glibc/linux.lisp	2016-11-11 09:08:51.751465279 -0700
 @@ -294,6 +294,8 @@
  ;; for robust mutexes
  (def-c-const EOWNERDEAD (:documentation "Owner died")) ; 130