Simplify push error message when ref already exists

If a client attempts to create a branch that already exists on the
remote side, tell them "already exists" rather than repeat lots of
information about the reference. Previously the error looked like:

  ! [remote rejected] tags/1.3.1 -> 1.3.1 (Ref Ref[refs/tags/1.3.1=e3857ee05...] already exists)

Now it will simply say:

  ! [remote rejected] tags/1.3.1 -> 1.3.1 (already exists)

Change-Id: I96fc67ca8b650052de6e662449a3c5bc8bbc010b

org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties

@@ -377,7 +377,8 @@ readTimedOut=Read timed out
 receivePackObjectTooLarge1=Object too large, rejecting the pack. Max object size limit is {0} bytes.
 receivePackObjectTooLarge2=Object too large ({0} bytes), rejecting the pack. Max object size limit is {1} bytes.
 receivingObjects=Receiving objects
-refAlreadyExists=Ref {0} already exists
+refAlreadyExists=already exists
+refAlreadyExists1=Ref {0} already exists
 reflogEntryNotFound=Entry {0} not found  in reflog for ''{1}''
 refNotResolved=Ref {0} can not be resolved
 refUpdateReturnCodeWas=RefUpdate return code was: {0}

org.eclipse.jgit/src/org/eclipse/jgit/api/CreateBranchCommand.java

@@ -131,7 +131,7 @@ public class CreateBranchCommand extends GitCommand<Ref> {
 					&& refToCheck.getName().startsWith(Constants.R_HEADS);
 			if (!force && exists)
 				throw new RefAlreadyExistsException(MessageFormat.format(
-						JGitText.get().refAlreadyExists, name));
+						JGitText.get().refAlreadyExists1, name));
 
 			ObjectId startAt = getStartPoint();
 			String startPointFullName = null;

org.eclipse.jgit/src/org/eclipse/jgit/api/RenameBranchCommand.java

@@ -108,7 +108,7 @@ public class RenameBranchCommand extends GitCommand<Ref> {
 			String fullNewName;
 			if (repo.getRef(newName) != null)
 				throw new RefAlreadyExistsException(MessageFormat.format(
-						JGitText.get().refAlreadyExists, newName));
+						JGitText.get().refAlreadyExists1, newName));
 			if (oldName != null) {
 				Ref ref = repo.getRef(oldName);
 				if (ref == null)

org.eclipse.jgit/src/org/eclipse/jgit/internal/JGitText.java

@@ -438,6 +438,7 @@ public class JGitText extends TranslationBundle {
 	/***/ public String receivePackObjectTooLarge2;
 	/***/ public String receivingObjects;
 	/***/ public String refAlreadyExists;
+	/***/ public String refAlreadyExists1;
 	/***/ public String reflogEntryNotFound;
 	/***/ public String refNotResolved;
 	/***/ public String refUpdateReturnCodeWas;

org.eclipse.jgit/src/org/eclipse/jgit/transport/BaseReceivePack.java

@@ -55,7 +55,6 @@ import java.io.EOFException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.text.MessageFormat;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashSet;
@@ -1055,8 +1054,8 @@ public abstract class BaseReceivePack {
 					// A well behaved client shouldn't have sent us a
 					// create command for a ref we advertised to it.
 					//
-					cmd.setResult(Result.REJECTED_OTHER_REASON, MessageFormat
-							.format(JGitText.get().refAlreadyExists, ref));
+					cmd.setResult(Result.REJECTED_OTHER_REASON,
+							JGitText.get().refAlreadyExists);
 					continue;
 				}
 			}