[libxml2]Add libxml2 library

libxml2/.gitlab-ci/downstream-php.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+
+set -e
+
+srcdir=$(pwd)
+installdir="$srcdir/install"
+export PKG_CONFIG_PATH="$installdir/lib/pkgconfig"
+
+git clone --depth 1 https://github.com/php/php-src.git
+cd php-src
+./buildconf
+./configure --with-xsl --enable-soap --enable-debug
+make -j$(nproc)
+make TESTS=" \
+    -g FAIL \
+    --show-diff \
+    --no-progress \
+    ext/dom \
+    ext/libxml \
+    ext/simplexml \
+    ext/soap \
+    ext/xml \
+    ext/xmlreader \
+    ext/xmlwriter \
+    ext/xsl \
+" test