Changed the root package from net.sf.briar to org.briarproject.

briar-api/src/org/briarproject/api/system/Clock.java

@@ -0,0 +1,14 @@
+package org.briarproject.api.system;
+
+/**
+ * An interface for time-related system functions that allows them to be
+ * replaced for testing.
+ */
+public interface Clock {
+
+	/** @see {@link java.lang.System#currentTimeMillis()} */
+	long currentTimeMillis();
+
+	/** @see {@link java.lang.Thread.sleep(long)} */
+	void sleep(long milliseconds) throws InterruptedException;
+}