Moved some API classes into packages.

briar-api/src/org/briarproject/api/contact/Contact.java

@@ -0,0 +1,40 @@
+package org.briarproject.api.contact;
+
+import org.briarproject.api.identity.Author;
+import org.briarproject.api.identity.AuthorId;
+
+public class Contact {
+
+	private final ContactId id;
+	private final Author author;
+	private final AuthorId localAuthorId;
+
+	public Contact(ContactId id, Author author, AuthorId localAuthorId) {
+		this.id = id;
+		this.author = author;
+		this.localAuthorId = localAuthorId;
+	}
+
+	public ContactId getId() {
+		return id;
+	}
+
+	public Author getAuthor() {
+		return author;
+	}
+
+	public AuthorId getLocalAuthorId() {
+		return localAuthorId;
+	}
+
+	@Override
+	public int hashCode() {
+		return id.hashCode();
+	}
+
+	@Override
+	public boolean equals(Object o) {
+		if (o instanceof Contact) return id.equals(((Contact) o).id);
+		return false;
+	}
+}