Let GCJ know we use 1.5 language facilities.

Lubomir Rintel <lkundrak@v3.sk>

diff -urp mars-sim.orig/scripts/build.xml mars-sim/scripts/build.xml
--- mars-sim.orig/scripts/build.xml	2008-07-24 07:11:53.000000000 +0200
+++ mars-sim/scripts/build.xml	2008-07-24 07:12:06.000000000 +0200
@@ -48,7 +48,7 @@
 
     <!-- Compile simulation classes. -->
     <target name="compile-sim" depends="init">
-        <javac srcdir="${mars.src}" destdir="${mars.class}">
+        <javac srcdir="${mars.src}" destdir="${mars.class}" source="1.5">
             <include name="org/mars_sim/msp/simulation/**/*.java" />
             <classpath>
 <!--
@@ -72,7 +72,7 @@
 
     <!-- Compile user interface classes. -->
     <target name="compile-ui" depends="compile-sim">
-        <javac srcdir="${mars.src}" destdir="${mars.class}">
+        <javac srcdir="${mars.src}" destdir="${mars.class}" source="1.5">
             <include name="org/mars_sim/msp/ui/standard/**/*.java" />
             <classpath>
 <!--
@@ -99,7 +99,7 @@
 
     <!-- Compile main project class. -->
     <target name="compile-main" depends="compile-sim, compile-ui">
-        <javac srcdir="${mars.src}" destdir="${mars.class}">
+        <javac srcdir="${mars.src}" destdir="${mars.class}" source="1.5">
             <include name="org/mars_sim/msp/*.java" />
         </javac>
     </target>
@@ -213,4 +213,4 @@
 
       </target>
 
-</project>
\ No newline at end of file
+</project>