Remove support for IRIX

The IRIX port wasn’t really working anyway, and the code was
getting in the way of other changes (e.g., getaddrinfo fixes).
IRIX’s supplier dropped support for IRIX in 2013.
* admin/CPP-DEFINES:
* configure.ac (opsys):
* doc/lispref/os.texi (System Environment):
* etc/MACHINES, etc/PROBLEMS:
* lisp/find-dired.el (find-grep-options):
* lisp/lpr.el (lpr-lp-system):
* lisp/ls-lisp.el (ls-lisp-emulation):
* lisp/mail/rmail.el (rmail-spool-directory):
* lisp/net/net-utils.el (ping-program-options):
* lisp/progmodes/gud.el (gud-irix-p, gud-dbx-use-stopformat-p):
* lisp/progmodes/ps-mode.el (ps-mode-print-function):
* src/conf_post.h [IRIX6_5]:
* src/emacs.c (Vsystem_type):
* src/filelock.c (get_boot_time_1):
* src/process.c (process_send_signal):
* src/unexelf.c (unexec):
Omit IRIX-specific code and/or documentation.
* configure.ac (NON_GCC_TEST_OPTIONS, IRIX6_5, PREFER_VSUSP):
Remove.  All uses removed.
* etc/NEWS: Document the change.

1 files changed, 0 insertions, 26 deletions

diff --git a/src/unexelf.c b/src/unexelf.c
index e90199472ed..6343207bd14 100644
--- a/src/unexelf.c
+++ b/src/unexelf.c
@@ -461,29 +461,6 @@ unexec (const char *new_name, const char *old_name)
 	  || !strcmp (old_section_names + new_shdr->sh_name, ".sdata")
 	  || !strcmp (old_section_names + new_shdr->sh_name, ".lit4")
 	  || !strcmp (old_section_names + new_shdr->sh_name, ".lit8")
-	  /* The conditional bit below was in Oliva's original code
-	     (1999-08-25) and seems to have been dropped by mistake
-	     subsequently.  It prevents a crash at startup under X in
-	     `IRIX64 6.5 6.5.17m', whether compiled on that release or
-	     an earlier one.  It causes no trouble on the other ELF
-	     platforms I could test (Irix 6.5.15m, Solaris 8, Debian
-	     Potato x86, Debian Woody SPARC); however, it's reported
-	     to cause crashes under some version of GNU/Linux.  It's
-	     not yet clear what's changed in that Irix version to
-	     cause the problem, or why the fix sometimes fails under
-	     GNU/Linux.  There's probably no good reason to have
-	     something Irix-specific here, but this will have to do
-	     for now.  IRIX6_5 is the most specific macro we have to
-	     test.  -- fx 2002-10-01
-
-	     The issue _looks_ as though it's gone away on 6.5.18m,
-	     but maybe it's still lurking, to be triggered by some
-	     change in the binary.  It appears to concern the dynamic
-	     loader, but I never got anywhere with an SGI support call
-	     seeking clues.  -- fx 2002-11-29.  */
-#ifdef IRIX6_5
-	  || !strcmp (old_section_names + new_shdr->sh_name, ".got")
-#endif
 	  || !strcmp (old_section_names + new_shdr->sh_name, ".sdata1")
 	  || !strcmp (old_section_names + new_shdr->sh_name, ".data1"))
 	src = (caddr_t) old_shdr->sh_addr;
@@ -665,9 +642,6 @@ unexec (const char *new_name, const char *old_name)
 	      || !strcmp (old_section_names + shdr->sh_name, ".sdata")
 	      || !strcmp (old_section_names + shdr->sh_name, ".lit4")
 	      || !strcmp (old_section_names + shdr->sh_name, ".lit8")
-#ifdef IRIX6_5			/* see above */
-	      || !strcmp (old_section_names + shdr->sh_name, ".got")
-#endif
 	      || !strcmp (old_section_names + shdr->sh_name, ".sdata1")
 	      || !strcmp (old_section_names + shdr->sh_name, ".data1"))
 	    {