Updating api-checker config.

git-svn-id: https://google-web-toolkit.googlecode.com/svn/releases/1.6@4274 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/build.xml b/build.xml
index 6b8bcc9..48c1335 100755
--- a/build.xml
+++ b/build.xml
@@ -9,7 +9,7 @@
   <property name="gwt.apicheck.config" 
     location="tools/api-checker/config/gwt15_16userApi.conf"/>
   <property name="gwt.apicheck.oldroot" 
-    location="../gwt-1.5"/>
+    value="../gwt-1.5"/>
 
   <target name="dist" depends="dev, user, servlet, tools, jni, doc, samples" description="Run the distributions">
     <gwt.ant dir="distro-source" />
diff --git a/tools/api-checker/config/gwt15_16userApi.conf b/tools/api-checker/config/gwt15_16userApi.conf
index e8da6bf..6639fbf 100644
--- a/tools/api-checker/config/gwt15_16userApi.conf
+++ b/tools/api-checker/config/gwt15_16userApi.conf
@@ -30,3 +30,4 @@
 java.lang.StringBuilder::append(Ljava/lang/StringBuffer;) OVERRIDABLE_METHOD_ARGUMENT_TYPE_CHANGE
 com.google.gwt.user.client.ui.Button::Button(Ljava/lang/String;Lcom/google/gwt/user/client/ui/ClickListener;) OVERLOADED_METHOD_CALL
 com.google.gwt.user.client.ui.ToggleButton::ToggleButton(Lcom/google/gwt/user/client/ui/Image;Lcom/google/gwt/user/client/ui/Image;Lcom/google/gwt/user/client/ui/ClickListener;) OVERLOADED_METHOD_CALL 
+com.google.gwt.user.client.ui.Tree::setImageBase(Ljava/lang/String;) MISSING
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