add build files for EXPath Package (.xar)

build.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project default="xar" name="frus">
+    <xmlproperty file="expath-pkg.xml"/>
+    <property name="project.version" value="${package(version)}"/>
+    <property name="project.app" value="${package(abbrev)}"/>
+    <property name="build.dir" value="build"/>
+    <target name="xar">
+        <mkdir dir="${build.dir}"/>
+        <zip basedir="." destfile="${build.dir}/${project.app}-${project.version}.xar" excludes="${build.dir}/*"/>
+    </target>
+</project>

expath-pkg.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<package xmlns="http://expath.org/ns/pkg" name="http://history.state.gov/ns/data/frus" abbrev="frus" version="0.1" spec="1.0">
+    <title>FRUS (data)</title>
+</package>

repo.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<meta xmlns="http://exist-db.org/xquery/repo">
+    <description>FRUS (data)</description>
+    <author>Office of the Historian</author>
+    <website>https://history.state.gov</website>
+    <status/>
+    <license/>
+    <copyright/>
+    <type>application</type>
+    <target>frus</target>
+    <prepare/>
+    <finish/>
+    <permissions password="" user="hsg" group="hsg" mode="rw-rw-r--"/>
+</meta>