Add a constant for info/exclude

Change-Id: Ifd537ce4e726cb9460ea332f683428689bd3d7f4

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

@@ -265,6 +265,9 @@ public final class Constants {
 	/** Packed refs file */
 	public static final String PACKED_REFS = "packed-refs";
 
+	/** Excludes-file */
+	public static final String INFO_EXCLUDE = "info/exclude";
+
 	/** The environment variable that contains the system user name */
 	public static final String OS_USER_NAME_KEY = "user.name";
 

org.eclipse.jgit/src/org/eclipse/jgit/treewalk/WorkingTreeIterator.java

@@ -1074,8 +1074,8 @@ public abstract class WorkingTreeIterator extends AbstractTreeIterator {
 				loadRulesFromFile(r, excludesfile);
 			}
 
-			File exclude = fs
-					.resolve(repository.getDirectory(), "info/exclude"); //$NON-NLS-1$
+			File exclude = fs.resolve(repository.getDirectory(),
+					Constants.INFO_EXCLUDE);
 			loadRulesFromFile(r, exclude);
 
 			return r.getRules().isEmpty() ? null : r;