LUCENE-1629: set javadocs encoding to UTF-8

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@774796 13f79535-47bb-0310-9956-ffa450edef68

common-build.xml

@@ -59,6 +59,7 @@
 
   <property name="javadoc.link" value="http://java.sun.com/j2se/1.4/docs/api/"/>
   <property name="javadoc.access" value="protected"/>
+  <property name="javadoc.charset" value="utf-8"/>
   <property name="javadoc.dir" value="${common.dir}/build/docs/api"/>
   <!-- Javadoc classpath -->
   <path id="javadoc.classpath">
@@ -572,6 +573,8 @@
           destdir="@{destdir}"
           access="${javadoc.access}"
           encoding="${build.encoding}"
+          charset="${javadoc.charset}"
+          docencoding="${javadoc.charset}"
           author="true"
           version="true"
           use="true"