Fix FindBugs and Eclipse warnings in org.eclipse.jgit.ui

Change-Id: Ie6b3ff7d470cc9b7044fd6288cbf86dcc58220eb

org.eclipse.jgit.ui/build.properties

@@ -1,4 +1,5 @@
-source.. = src/
+source.. = src/,\
+           resources/
 output.. = bin/
 bin.includes = META-INF/,\
                .,\

org.eclipse.jgit.ui/src/org/eclipse/jgit/awtui/AWTPlotRenderer.java

@@ -49,6 +49,7 @@ import java.awt.Color;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Polygon;
+import java.io.Serializable;
 
 import org.eclipse.jgit.awtui.CommitGraphPane.GraphCellRender;
 import org.eclipse.jgit.awtui.SwingCommitList.SwingLane;
@@ -57,11 +58,13 @@ import org.eclipse.jgit.lib.Ref;
 import org.eclipse.jgit.revplot.AbstractPlotRenderer;
 import org.eclipse.jgit.revplot.PlotCommit;
 
-final class AWTPlotRenderer extends AbstractPlotRenderer<SwingLane, Color> {
+final class AWTPlotRenderer extends AbstractPlotRenderer<SwingLane, Color>
+		implements Serializable {
+	private static final long serialVersionUID = 1L;
 
 	final GraphCellRender cell;
 
-	Graphics2D g;
+	transient Graphics2D g;
 
 	AWTPlotRenderer(final GraphCellRender c) {
 		cell = c;

org.eclipse.jgit.ui/src/org/eclipse/jgit/awtui/CommitGraphPane.java

@@ -222,6 +222,7 @@ public class CommitGraphPane extends JTable {
 
 		PlotCommit<SwingLane> commit;
 
+		@SuppressWarnings("unchecked")
 		public Component getTableCellRendererComponent(final JTable table,
 				final Object value, final boolean isSelected,
 				final boolean hasFocus, final int row, final int column) {

org.eclipse.jgit.ui/src/org/eclipse/jgit/awtui/SwingCommitList.java

@@ -87,5 +87,10 @@ class SwingCommitList extends PlotCommitList<SwingCommitList.SwingLane> {
 		public boolean equals(Object o) {
 			return super.equals(o) && color.equals(((SwingLane)o).color);
 		}
+
+		@Override
+		public int hashCode() {
+			return super.hashCode() ^ color.hashCode();
+		}
 	}
 }