Updates pull request from Roman Tsypuk to convert the build system from

ant to gradle.  Removes linux and windows application launch scripts and
produces an executable jar with all resources included.

src/main/java/io/github/dsheirer/message/Message.java

@@ -0,0 +1,115 @@
+/*******************************************************************************
+ *     SDR Trunk 
+ *     Copyright (C) 2014-2016 Dennis Sheirer
+ * 
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU 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 General Public License for more details.
+ * 
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>
+ ******************************************************************************/
+package io.github.dsheirer.message;
+
+import io.github.dsheirer.alias.Alias;
+import io.github.dsheirer.map.Plottable;
+
+import java.util.Collections;
+import java.util.List;
+
+public abstract class Message
+{
+	protected long mTimeReceived;
+	
+	public Message()
+	{
+		mTimeReceived = System.currentTimeMillis();
+	}
+
+	public long getTimeReceived()
+	{
+		return mTimeReceived;
+	}
+
+	/**
+	 * Map plottable
+	 */
+	public Plottable getPlottable()
+	{
+//TODO: move this to an IPlottable interface that only gets implemented as needed
+		return null;
+	}
+
+	/**
+	 * Decoded textual representation of the message
+	 */
+	public abstract String toString();
+	
+	/**
+	 * Indicates if the message is valid and has passed crc/integrity checks
+	 */
+	public abstract boolean isValid();
+
+	/**
+	 * Status of the CRC check of the message
+	 */
+	public abstract String getErrorStatus();
+
+	/**
+	 * Parsed Message
+	 * @return
+	 */
+	public abstract String getMessage();
+
+	/**
+	 * Raw ( 0 & 1 ) message bits
+	 */
+	public abstract String getBinaryMessage();
+	
+
+	/**
+	 * Decoded protocol
+	 */
+	public abstract String getProtocol();
+	
+	/**
+	 * Event - call, data, idle, etc.
+	 */
+	public abstract String getEventType();
+	
+	/**
+	 * Formatted from identifier
+	 */
+	public abstract String getFromID();
+
+	/**
+	 * From identifier alias (from AliasManager)
+	 */
+	public abstract Alias getFromIDAlias();
+	
+	/**
+	 * Formatted to identifier
+	 */
+	public abstract String getToID();
+	
+	/**
+	 * To identifier alias (from AliasManager)
+	 * @return
+	 */
+	public abstract Alias getToIDAlias();
+	
+	
+	/**
+	 * Provides a listing of aliases contained in the message.
+	 */
+	public List<Alias> getAliases()
+	{
+		return Collections.EMPTY_LIST;
+	}
+}