package/libgit2: bump version to 1.8.1

Upstream notes that libhttp-parser is unmaintained and suggest llhttp
as a replacement.  This version bundles llhttp (and includes its license
in COPYING) but still allows to use a system-provided libhttp-parser.

llhttp (https://github.com/nodejs/llhttp) is a C library that depends on
a nodejs interpreter and more than 10 npm dependencies to generate its
parser code.  The bundled version contains the generated sources and
could be built without nodejs.  But distributing this generated code
as part of libgit2 would probably be legally dubious because of the
GPL's original source code provision, even if llhttp is MIT-licensed.

Packaging llhttp would be a daunting task and its build will require
considerable time and space, so for now, keep using libhttp-parser.

Signed-off-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>

package/libgit2/libgit2.hash

@@ -1,3 +1,3 @@
 # Locally calculated
-sha256  9e1d6a880d59026b675456fbb1593c724c68d73c34c0d214d6eb848e9bbd8ae4  libgit2-1.8.0.tar.gz
-sha256  08041a7e9c4d0e5e84f9711c824a0bd0366ee782ec29c6d7275fdab73e2ca115  COPYING
+sha256  8c1eaf0cf07cba0e9021920bfba9502140220786ed5d8a8ec6c7ad9174522f8e  libgit2-1.8.1.tar.gz
+sha256  e3712465634e97cfd850822a4eb5ac7d2f8a10f753189366d5a2060046f28288  COPYING

package/libgit2/libgit2.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBGIT2_VERSION = 1.8.0
+LIBGIT2_VERSION = 1.8.1
 LIBGIT2_SITE = $(call github,libgit2,libgit2,v$(LIBGIT2_VERSION))
 LIBGIT2_LICENSE = \
 	GPL-2.0 with linking exception, \
@@ -22,7 +22,7 @@ LIBGIT2_CONF_OPTS = \
 	-DUSE_GSSAPI=OFF \
 	-DUSE_ICONV=ON \
 	-DREGEX_BACKEND=regcomp \
-	-DUSE_HTTP_PARSER=system \
+	-DUSE_HTTP_PARSER=http-parser \
 	-DUSE_NTLMCLIENT=OFF \
 	-DUSE_XDIFF=builtin \
 	-DUSE_THREADS=$(if $(BR2_TOOLCHAIN_HAS_THREADS),ON,OFF)