Merge: Avoid non-localised literal string warning for "recursive"

Instead of using the literal string, take the name from the RECURSIVE
enum value.

Change-Id: I9d8f289232dfc8f784287029c41714ddbdee232b
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Merge.java

@@ -195,14 +195,11 @@ class Merge extends TextBuiltin {
 					}
 				break;
 			case MERGED:
-				String name;
-				if (!isMergedInto(oldHead, src)) {
-					name = mergeStrategy.getName();
-				} else {
-					name = "recursive"; //$NON-NLS-1$
-				}
-				outw.println(
-						MessageFormat.format(CLIText.get().mergeMadeBy, name));
+				MergeStrategy strategy = isMergedInto(oldHead, src)
+						? MergeStrategy.RECURSIVE
+						: mergeStrategy;
+				outw.println(MessageFormat.format(CLIText.get().mergeMadeBy,
+						strategy.getName()));
 				break;
 			case MERGED_NOT_COMMITTED:
 				outw.println(