FOP-2889: Make JAI optional

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@1873625 13f79535-47bb-0310-9956-ffa450edef68

fop-core/pom.xml

@@ -96,11 +96,13 @@
       <groupId>javax.media</groupId>
       <artifactId>jai-core</artifactId>
       <version>1.1.3</version>
+      <scope>compile</scope>
     </dependency>
     <dependency>
       <groupId>com.sun.media</groupId>
       <artifactId>jai-codec</artifactId>
       <version>1.1.3</version>
+      <scope>compile</scope>
     </dependency>
     <!-- test deps -->
     <dependency>