Implement Config.Entry.toString() to help debugging

Change-Id: I86f6359d955d39ab033848b87ed39d20378d3c1f
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit/src/org/eclipse/jgit/lib/Config.java

@@ -1414,6 +1414,7 @@ public class Config {
 	 * The configuration file entry
 	 */
 	private static class Entry {
+
 		/**
 		 * The text content before entry
 		 */
@@ -1482,6 +1483,20 @@ public class Config {
 				return false;
 			return a.equals(b);
 		}
+
+		@Override
+		public String toString() {
+			if (section == null)
+				return "<empty>";
+			StringBuilder b = new StringBuilder(section);
+			if (subsection != null)
+				b.append(".").append(subsection);
+			if (name != null)
+				b.append(".").append(name);
+			if (value != null)
+				b.append("=").append(value);
+			return b.toString();
+		}
 	}
 
 	private static class StringReader {