package/tar: fix linking with libiconv

Backport two patches from upstream to fix linking with libiconv, e.g.
with this defconfig:

    BR2_TOOLCHAIN_BUILDROOT_UCLIBC=y
    BR2_TOOLCHAIN_BUILDROOT_WCHAR=y
    BR2_SYSTEM_ENABLE_NLS=y
    BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
    BR2_PACKAGE_LIBICONV=y
    BR2_PACKAGE_TAR=y

It is interesting to note that the first patch we backport is the first
commit in the tar repository after the 1.35 tag, and was comitted the
same day the release was cut...

Fixes:

 https://gitlab.com/buildroot.org/buildroot/-/issues/4
 http://autobuild.buildroot.net/results/c074c2e22a7f764400ecc7dd1a6cd6022fa87fb9/

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/tar/0002-Fix-savannah-bug-#64441.patch

@@ -0,0 +1,28 @@
+From 8632df398b2f548465ebe68b8f494c0d6f8d913d Mon Sep 17 00:00:00 2001
+From: Sergey Poznyakoff <gray@gnu.org>
+Date: Tue, 18 Jul 2023 17:02:23 +0300
+Subject: Fix savannah bug #64441
+
+* src/Makefile.am (tar_LDADD): Add libiconv libraries.
+
+[yann.morin.1998@free.fr: backport from upstream]
+Upstream: https://git.savannah.gnu.org/cgit/tar.git/commit/?id=8632df398b2f548465ebe68b8f494c0d6f8d913d
+Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
+---
+ src/Makefile.am | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/src/Makefile.am b/src/Makefile.am
+index 36c9543..e2ec58d 100644
+--- a/src/Makefile.am
++++ b/src/Makefile.am
+@@ -52,4 +52,5 @@ AM_CFLAGS = $(WARN_CFLAGS) $(WERROR_CFLAGS)
+ tar_LDADD = $(LIBS) ../lib/libtar.a ../gnu/libgnu.a\
+  $(LIB_ACL) $(LIB_CLOCK_GETTIME) $(LIB_EACCESS)\
+  $(LIB_GETRANDOM) $(LIB_HARD_LOCALE) $(FILE_HAS_ACL_LIB) $(LIB_MBRTOWC)\
+- $(LIB_SELINUX) $(LIB_SETLOCALE_NULL)
++ $(LIB_SELINUX) $(LIB_SETLOCALE_NULL) \
++ $(LIBINTL) $(LIBICONV)
+-- 
+cgit v1.1
+

package/tar/0003-tests-fix-LDADD.patch

@@ -0,0 +1,30 @@
+From 71530f72d21d9af00b5688948111666f62f5ec4b Mon Sep 17 00:00:00 2001
+From: Paul Eggert <eggert@cs.ucla.edu>
+Date: Wed, 19 Jul 2023 15:48:25 -0700
+Subject: tests: fix LDADD
+
+Problem reported by Christian Weisgerber <naddy@mips.inka.de> in:
+https://lists.gnu.org/r/bug-tar/2023-07/msg00015.html
+* tests/Makefile.am (LDADD): Add $(LIBINTL), $(LIBICONV).
+
+[yann.morin.1998@free.fr: backport from upstream]
+Upstream: https://git.savannah.gnu.org/cgit/tar.git/commit/?id=71530f72d21d9af00b5688948111666f62f5ec4b
+Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
+---
+ tests/Makefile.am | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/tests/Makefile.am b/tests/Makefile.am
+index 1884b72..b696f01 100644
+--- a/tests/Makefile.am
++++ b/tests/Makefile.am
+@@ -337,4 +337,5 @@ AM_CPPFLAGS = \
+ LDADD = ../gnu/libgnu.a\
+  $(LIB_ACL) $(LIB_CLOCK_GETTIME) $(LIB_EACCESS)\
+  $(LIB_GETRANDOM) $(LIB_HARD_LOCALE) $(FILE_HAS_ACL_LIB) $(LIB_MBRTOWC)\
+- $(LIB_SELINUX) $(LIB_SETLOCALE_NULL)
++ $(LIB_SELINUX) $(LIB_SETLOCALE_NULL) \
++ $(LIBINTL) $(LIBICONV)
+-- 
+cgit v1.1
+