bfd: Use changequote for "i[3-7]86-*-linux-*"

Use changequote to match "i[3-7]86-*-linux-*", instead of
"i3-786-*-linux-*".

	PR ld/23388
	* configure.ac: Use changequote for "i[3-7]86-*-linux-*".
	* configure: Regenerated.

(cherry picked from commit 872899f1efeda1e93ed569d322c6b2ee85ce885c)

bfd/ChangeLog

+2018-07-09  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR ld/23388
+	* configure.ac: Use changequote for "i[3-7]86-*-linux-*".
+	* configure: Regenerated.
+
 2018-07-09  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR ld/23372

bfd/configure

@@ -12485,7 +12485,7 @@ fi
 
 # Enable -z separate-code by default for Linux/x86.
 case "${target}" in
-i3-786-*-linux-* | x86_64-*-linux-*)
+i[3-7]86-*-linux-* | x86_64-*-linux-*)
   if test ${ac_default_ld_z_separate_code} = unset; then
     ac_default_ld_z_separate_code=1
   fi

bfd/configure.ac

@@ -106,8 +106,10 @@ AC_ARG_ENABLE(separate-code,
   no) ac_default_ld_z_separate_code=0 ;;
 esac])
 # Enable -z separate-code by default for Linux/x86.
+changequote(,)dnl
 case "${target}" in
 i[3-7]86-*-linux-* | x86_64-*-linux-*)
+changequote([,])dnl
   if test ${ac_default_ld_z_separate_code} = unset; then
     ac_default_ld_z_separate_code=1
   fi