FOP-2356: default JAVA_HOME is not compatible with Oracle's JDK on Mac OS X

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@1720811 13f79535-47bb-0310-9956-ffa450edef68

fop

@@ -80,7 +80,11 @@ case "`uname`" in
   CYGWIN*) cygwin=true ;;
   Darwin*) darwin=true
            if [ -z "$JAVA_HOME" ] ; then
-             JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Home
+               if [ -x '/usr/libexec/java_home' ] ; then
+                   JAVA_HOME=`/usr/libexec/java_home`
+               elif [ -d "/System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Home" ]; then
+                   JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Home
+               fi
            fi
            ;;
 esac