libgit2: upgrade 1.6.3 -> 1.6.4

Bug fixes
=========
    config: return GIT_ENOTFOUND for missing programdata

(From OE-Core rev: 9edb13d7a7d79423c93f01d9e112193dd7b1be21)

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-support/libgit2/libgit2_1.6.4.bb

@@ -0,0 +1,21 @@
+SUMMARY = "the Git linkable library"
+HOMEPAGE = "http://libgit2.github.com/"
+LICENSE = "GPL-2.0-with-GCC-exception & MIT & OpenSSL & BSD-3-Clause & Zlib & ISC & LGPL-2.1-or-later & CC0-1.0 & BSD-2-Clause"
+LIC_FILES_CHKSUM = "file://COPYING;md5=5bdf47bbc9a39dc6ce076d59e322dc17"
+
+DEPENDS = "curl openssl zlib libssh2 libgcrypt libpcre2"
+
+SRC_URI = "git://github.com/libgit2/libgit2.git;branch=maint/v1.6;protocol=https"
+SRCREV = "e6325351ceee58cf56f58bdce61b38907805544f"
+
+S = "${WORKDIR}/git"
+
+inherit cmake
+
+EXTRA_OECMAKE = "\
+    -DBUILD_TESTS=OFF \
+    -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+    -DREGEX_BACKEND='pcre2' \
+"
+
+BBCLASSEXTEND = "native"