Merge pull request #15 from niqueco/fix-for-old-androids

don't use Arrays.copyOf to get compatibility with Android <2.3

Author: davidmoten

Diff for: src/main/java/com/github/davidmoten/geo/CoverageLongs.java

@@ -45,7 +45,9 @@ public CoverageLongs(long[] hashes, int count, double ratio) {
      * @return set of hashes
      */
     public long[] getHashes() {
-        return Arrays.copyOf(hashes, count);
+        long[] res = new long[count];
+        System.arraycopy(hashes, 0, res, 0, count);
+        return res;
     }
 
     /**

Diff for: src/main/java/com/github/davidmoten/geo/GeoHash.java

@@ -626,8 +626,11 @@ void add(long l)
 			for(int i = 0 ; i < count ; i++)
 				if(array[i] == l)
 					return;
-			if(count == cap)
-				array = Arrays.copyOf(array, cap*=2);
+			if(count == cap) {
+				long[] newArray = new long[cap*=2];
+				System.arraycopy(array, 0, newArray, 0, count);
+				array = newArray;
+			}
 			array[count++] = l;
 		}
 	}