Pullup trunk for RC4.

Fixes:
#694    Safari 1.3.2 doesn't work with OL 2.4
#695    GeoRSS serializer is broken
#696    events need to fall through the overview map extent rectangle
#697    Vector example to show how to use styles
#698    add close box option to AnchoredBubble
#701    SVG render does not always clear features when map extent changes
#703    OpenLayers.Layer.Vector do not properly destroy its features
#706    Full CSS support fails when Control.OverviewMap is loaded
#708    change WKT format to deal in features instead of geometries
#710    Install instructions unclear
#711    OpenLayers.Layer.Image requires OpenLayers.Tile.Image
#715    layer.js needs sanity check
#718    WMS.Untiled Clone doesn't work
#719    SVG renderer does not always redraw LineStrings and Polygons
#720    remove console.log() from OpenLayers.Format.WKT


git-svn-id: http://svn.openlayers.org/branches/openlayers/2.4@3177 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/Vector.js

@@ -97,8 +97,7 @@ OpenLayers.Layer.Vector.prototype =
     destroy: function() {
         OpenLayers.Layer.prototype.destroy.apply(this, arguments);  
 
-        // HACK HACK -- I believe we should be iterating and 
-        //              calling feature[i].destroy() here. 
+        this.destroyFeatures();
         this.features = null;
         this.selectedFeatures = null;
         if (this.renderer) {
@@ -247,8 +246,10 @@ OpenLayers.Layer.Vector.prototype =
             var feature = features[i];
             this.features = OpenLayers.Util.removeItem(this.features, feature);
 
-            this.renderer.eraseGeometry(feature.geometry);
-            
+            if (feature.geometry) {
+                this.renderer.eraseGeometry(feature.geometry);
+            }
+                    
             //in the case that this feature is one of the selected features, 
             // remove it from that array as well.
             if (OpenLayers.Util.indexOf(this.selectedFeatures, feature) != -1){