JAL-2116 add 1.8 1.7 compatible launch string

diff --git a/build.xml b/build.xml
index 2eafce5..6ed340d 100755 (executable)
--- a/build.xml
+++ b/build.xml
@@ -426,6 +426,7 @@
         </information>
         <resources>
           <j2se version="9+" />
+          <j2se version="7,8" initial-heap-size="${inih}" max-heap-size="${maxh}" />
           <jar main="true" href="jalview.jar"/>
           <fileset dir="${packageDir}">
             <exclude name="jalview.jar" />