package/exim: update patches to be applied with fuzz 0

Commit 8f88a644ed "support/scripts/apply-patches.sh: set the maximum
fuzz factor to 0" reduced the fuzz factor.

Due to this change, exim fails to build with output:

    Applying 0004-exim_lock-fix-lstat-related-build-errors.patch using patch:
    patching file src/exim_lock.c
    Hunk #1 FAILED at 13.
    Hunk #2 succeeded at 27 (offset 1 line).
    1 out of 2 hunks FAILED -- saving rejects to file src/exim_lock.c.rej

This commit rebases the package patches on the current package version
when needed.

Fixes:
http://autobuild.buildroot.net/results/ff27d5ebd7f24ac8cb236b83c67c2c75255e51c6/

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Yann E. MORIN <yann.morin@orange.com>
Tested-by: Yann E. MORIN <yann.morin@orange.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/exim/0001-Build-buildconfig-for-the-host.patch

@@ -2,6 +2,8 @@ buildconfig is meant to be executed on the host, so it has to be compiled
 using $(HOSTCC), not $(CC).
 
 Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
+[Bernd: rebased for version 4.97.1]
+Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
 ---
  OS/Makefile-Base |    4 ++--
  1 files changed, 2 insertions(+), 2 deletions(-)
@@ -10,7 +12,7 @@ diff --git a/OS/Makefile-Base b/OS/Makefile-Base
 index 29a6ad3..420ba60 100644
 --- a/OS/Makefile-Base
 +++ b/OS/Makefile-Base
-@@ -114,8 +114,8 @@ allexim: config.h $(EXIM_MONITOR) exicyclog exinext exiwhat \
+@@ -258,8 +258,8 @@ allexim: config.h $(EXIM_MONITOR) exicyclog exinext exiwhat \
  
  # Targets for special-purpose configuration header builders
  buildconfig: buildconfig.c

package/exim/0002-Don-t-make-backup-copies-of-installed-files.patch

@@ -5,6 +5,8 @@ This leads to useless duplicated files on the target, so disable this
 piece of code.
 
 Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
+[Bernd: rebased for version 4.97.1]
+Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
 ---
  scripts/exim_install |   18 +++++++++---------
  1 files changed, 9 insertions(+), 9 deletions(-)
@@ -13,7 +15,7 @@ diff --git a/scripts/exim_install b/scripts/exim_install
 index 616ab3c..e68e7d5 100755
 --- a/scripts/exim_install
 +++ b/scripts/exim_install
-@@ -344,15 +344,15 @@ while [ $# -gt 0 ]; do
+@@ -348,15 +348,15 @@ while [ $# -gt 0 ]; do
  
    else
      if ../scripts/newer ${name} ${BIN_DIRECTORY}/${name}; then

package/exim/0003-Skip-version-check-and-symlink-installation.patch

@@ -9,8 +9,8 @@ Inspired by:
 http://patch-tracker.debian.org/patch/series/view/exim4/4.76-2/35_install.dpatch
 
 Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
-(rebased against exim 4.89)
-Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
+[Bernd: rebased for version 4.89 & 4.97.1]
+Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
 ---
  scripts/exim_install |    7 +++++--
  1 files changed, 5 insertions(+), 2 deletions(-)
@@ -19,7 +19,7 @@ diff --git a/scripts/exim_install b/scripts/exim_install
 index e68e7d5..487a4e1 100755
 --- a/scripts/exim_install
 +++ b/scripts/exim_install
-@@ -58,6 +58,8 @@
+@@ -61,6 +61,8 @@
    shift
  done
  
@@ -28,7 +28,7 @@ index e68e7d5..487a4e1 100755
  # Get the values of BIN_DIRECTORY, CONFIGURE_FILE, INFO_DIRECTORY, NO_SYMLINK,
  # SYSTEM_ALIASES_FILE, and EXE from the global Makefile (in the build
  # directory). EXE is empty except in the Cygwin environment. In each case, keep
-@@ -217,9 +219,7 @@
+@@ -220,9 +223,7 @@
    # The exim binary is handled specially
  
    if [ $name = exim${EXE} ]; then

package/exim/0004-exim_lock-fix-lstat-related-build-errors.patch

@@ -22,6 +22,8 @@ Fixes:
 
 Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
 Upstream-status: https://bugs.exim.org/show_bug.cgi?id=2523
+[Bernd: rebased for version 4.97.1]
+Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
 ---
  src/exim_lock.c | 3 +++
  1 file changed, 3 insertions(+)
@@ -30,8 +32,8 @@ diff --git a/src/exim_lock.c b/src/exim_lock.c
 index 068216816054..cb140aff6436 100644
 --- a/src/exim_lock.c
 +++ b/src/exim_lock.c
-@@ -13,6 +13,8 @@ Argument: the name of the lock file
- Copyright (c) The Exim Maintainers 2016
+@@ -14,6 +14,8 @@ Copyright (c) The Exim Maintainers 2016 - 2021
+ SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 +#define _XOPEN_SOURCE
@@ -39,7 +41,7 @@ index 068216816054..cb140aff6436 100644
  #include "os.h"
 
  #include <stdio.h>
-@@ -26,6 +28,7 @@ Copyright (c) The Exim Maintainers 2016
+@@ -27,6 +29,7 @@ Copyright (c) The Exim Maintainers 2016
  #include <unistd.h>
  #include <utime.h>
  #include <sys/utsname.h>

package/exim/0005-sieve-fix-build-errors.patch

@@ -21,6 +21,8 @@ buildsystem.
 
 Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
 Upstream-status: https://bugs.exim.org/show_bug.cgi?id=2523
+[Bernd: rebased for version 4.97.1]
+Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
 ---
  src/sieve.c | 2 ++
  1 file changed, 2 insertions(+)
@@ -29,7 +31,7 @@ diff --git a/src/sieve.c b/src/sieve.c
 index 5e8d1e6f4776..9632f2d43810 100644
 --- a/src/sieve.c
 +++ b/src/sieve.c
-@@ -12,6 +12,8 @@
+@@ -14,6 +14,8 @@
 
  /* Sieve mail filter. */