Fix runtime breakage on ia64, which was introduced with binutils 2.15.

Note that emacs is run as part of the build, so it shows as a build
failure...

To explain (for maintainer's benefit):

Previously the linker would put the text segment in region 2 and the
data segment in region 3. This was changed for FreeBSD (due to me
sending a patch :-) to load the text segment in region 1 with the data
segment immediately following the text segment in the same region (or
subsequent regions of the text segment is larger than 2^61 bytes in
size -- fat chance :-)

So, the previous value of DATA_SEG_BITS (=0x6000000000000000, the
region base of the data segment prior to the binutils 2.15 import),
needed to be changed to match the current layout (=0x2000000000000000,
the region 1 base address).

Approved by: portmgr (krion -- thank!)

editors/emacs/files/patch-src:m:ia64.h

@@ -1,5 +1,5 @@
 --- src/m/ia64.h.orig	Fri Sep 29 06:00:37 2000
-+++ src/m/ia64.h	Thu Nov 20 13:44:02 2003
++++ src/m/ia64.h	Sun Sep  5 11:57:57 2004
 @@ -147,7 +147,7 @@
  
  #ifndef NOT_C_CODE
@@ -9,3 +9,11 @@
  #  include <alloca.h>
  # else
  #  include <stdlib.h>
+@@ -178,6 +178,6 @@
+ 
+ #endif /* not NOT_C_CODE */
+ 
+-#define DATA_SEG_BITS	0x6000000000000000
++#define DATA_SEG_BITS	0x2000000000000000
+ 
+ #define HAVE_TEXT_START

editors/emacs22/files/patch-src:m:ia64.h

@@ -1,5 +1,5 @@
 --- src/m/ia64.h.orig	Fri Sep 29 06:00:37 2000
-+++ src/m/ia64.h	Thu Nov 20 13:44:02 2003
++++ src/m/ia64.h	Sun Sep  5 11:57:57 2004
 @@ -147,7 +147,7 @@
  
  #ifndef NOT_C_CODE
@@ -9,3 +9,11 @@
  #  include <alloca.h>
  # else
  #  include <stdlib.h>
+@@ -178,6 +178,6 @@
+ 
+ #endif /* not NOT_C_CODE */
+ 
+-#define DATA_SEG_BITS	0x6000000000000000
++#define DATA_SEG_BITS	0x2000000000000000
+ 
+ #define HAVE_TEXT_START

editors/emacs23/files/patch-src:m:ia64.h

@@ -1,5 +1,5 @@
 --- src/m/ia64.h.orig	Fri Sep 29 06:00:37 2000
-+++ src/m/ia64.h	Thu Nov 20 13:44:02 2003
++++ src/m/ia64.h	Sun Sep  5 11:57:57 2004
 @@ -147,7 +147,7 @@
  
  #ifndef NOT_C_CODE
@@ -9,3 +9,11 @@
  #  include <alloca.h>
  # else
  #  include <stdlib.h>
+@@ -178,6 +178,6 @@
+ 
+ #endif /* not NOT_C_CODE */
+ 
+-#define DATA_SEG_BITS	0x6000000000000000
++#define DATA_SEG_BITS	0x2000000000000000
+ 
+ #define HAVE_TEXT_START