Enabled encoding option for gcj Java compiler.

Submitted by: "Takashi Okamoto" <tokamoto@rd.nttdata.co.jp>


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@269758 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/taskdefs/compilers/Gcj.java

@@ -122,8 +122,7 @@ public class Gcj extends DefaultCompilerAdapter {
         cmd.createArgument().setPath(classpath);
 
         if (encoding != null) {
-            attributes.log("gcj doesn't support -encoding option.",
-                           Project.MSG_WARN);
+            cmd.createArgument().setValue("--encoding=" + encoding);
         }
         if (debug) {
             cmd.createArgument().setValue("-g1");