- remove swrenderer

- rearchitect:
 now that MapView is a ViewGroup and MapRenderer is the GLSurfaceView.
- lock/unlock proxy tiles properly to not be removed from cache while in use

src/org/oscim/utils/LRUCache.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2010, 2011, 2012 mapsforge.org
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.utils;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+/**
+ * An LRUCache with a fixed size and an access-order policy. Old mappings are automatically removed from the cache when
+ * new mappings are added. This implementation uses an {@link LinkedHashMap} internally.
+ * 
+ * @param <K>
+ *            the type of the map key, see {@link Map}.
+ * @param <V>
+ *            the type of the map value, see {@link Map}.
+ */
+public class LRUCache<K, V> extends LinkedHashMap<K, V> {
+	private static final float LOAD_FACTOR = 0.6f;
+	private static final long serialVersionUID = 1L;
+
+	private static int calculateInitialCapacity(int capacity) {
+		if (capacity < 0) {
+			throw new IllegalArgumentException("capacity must not be negative: " + capacity);
+		}
+		return (int) (capacity / LOAD_FACTOR) + 2;
+	}
+
+	private final int capacity;
+
+	/**
+	 * @param capacity
+	 *            the maximum capacity of this cache.
+	 * @throws IllegalArgumentException
+	 *             if the capacity is negative.
+	 */
+	public LRUCache(int capacity) {
+		super(calculateInitialCapacity(capacity), LOAD_FACTOR, true);
+		this.capacity = capacity;
+	}
+
+	@Override
+	protected boolean removeEldestEntry(Map.Entry<K, V> eldest) {
+		return size() > this.capacity;
+	}
+}