package/libksba: bump to version 1.6.4

For change log, see [1] and [2].

This commit also change the comment in hash file to add a link to the
integrity check procedure. It also includes SHA1 hash published
upstream.

The AUTHORS file hash is updated. It was reformatted, in upstream
commit [3].

libksba 1.6.4 updated its gpg-error.m4 macro files to detect
gpgrt-config. Its path needs to be forced in _CONF_ENV to make sure it
will work in all host environments. See the log entry of commit
d7f2d8403e "package/gnupg2: fix build failure when host provides an
old gpgrt-config" [4] for a complete explanation.

[1] https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git;a=log;h=libksba-1.6.4
[2] https://dev.gnupg.org/T6543
[3] https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git;a=commitdiff;h=557999424ebd13e70d6fc17e648a5dd2a06f440b
[4] https://git.buildroot.org/buildroot/commit/?id=d7f2d8403ec82f3b1772ec17bf1df8c42987a1f8

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libksba/libksba.hash

@@ -1,8 +1,9 @@
-# Locally calculated after checking pgp signature
-sha256  3f72c68db30971ebbf14367527719423f0a4d5f8103fc9f4a1c01a9fa440de5c  libksba-1.6.3.tar.bz2
+# From https://www.gnupg.org/download/integrity_check.html
+sha1  258c31c72adda2ef547d94038b7e0fd7bd93d03c  libksba-1.6.4.tar.bz2
+sha256  bbb43f032b9164d86c781ffe42213a83bf4f2fee91455edfa4654521b8b03b6b  libksba-1.6.4.tar.bz2
 
 # Hash for license files:
-sha256  8f1b87e551d97b2b23b6d3403a5d598c63ea89824cb8ee351f631f6cab2beaa5  AUTHORS
+sha256  f9c59ea5a5e1dfdeebcd134e6a594c21eb088cc95f6653ee99ff2e187c105380  AUTHORS
 sha256  6197b98c6bf69838c624809c509d84333de1bc847155168c0e84527446a27076  COPYING
 sha256  8177f97513213526df2cf6184d8ff986c675afb514d4e68a404010521b880643  COPYING.GPLv2
 sha256  0abbff814cd00e2b0b6d08395af2b419c1a92026c4b4adacbb65ccda45fa58cf  COPYING.GPLv3

package/libksba/libksba.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBKSBA_VERSION = 1.6.3
+LIBKSBA_VERSION = 1.6.4
 LIBKSBA_SOURCE = libksba-$(LIBKSBA_VERSION).tar.bz2
 LIBKSBA_SITE = https://gnupg.org/ftp/gcrypt/libksba
 LIBKSBA_LICENSE = LGPL-3.0+ or GPL-2.0+ (library, headers), GPL-3.0+ (manual, tests, build system)
@@ -14,4 +14,8 @@ LIBKSBA_INSTALL_STAGING = YES
 LIBKSBA_DEPENDENCIES = libgpg-error
 LIBKSBA_CONF_OPTS = --with-gpg-error-prefix=$(STAGING_DIR)/usr
 
+# Force the path to "gpgrt-config" (from the libgpg-error package) to
+# avoid using the one on host, if present.
+LIBKSBA_CONF_ENV += GPGRT_CONFIG=$(STAGING_DIR)/usr/bin/gpgrt-config
+
 $(eval $(autotools-package))