allow source dist archive to be an absolute filename

diff --git a/build.xml b/build.xml
index 9af447e..9ea9566 100755 (executable)
--- a/build.xml
+++ b/build.xml
@@ -476,11 +476,7 @@
        />
        </target>
        <target name="sourcedist" description="create jalview source distribution" depends="init">
-               <delete>
-                       <fileset dir="${basedir}">
-                               <include name="${source.dist.name}"/>
-                       </fileset>
-               </delete>
+               <delete file="${source.dist.name}"/>
                <tar destfile="${source.dist.name}" compression="gzip">
                        <tarfileset dir="./" prefix="jalview" preserveLeadingSlashes="true">
                                <include name="LICENSE"/>