PacketLineIn: Rename isDelim to isDelimiter

Change-Id: I279808b8ddd8a9230a35582c00867b811633dfe8
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/PacketLineInTest.java

@@ -157,7 +157,7 @@ public class PacketLineInTest {
 	@Test
 	public void testReadString_Delim() throws IOException {
 		init("0001");
-		assertTrue(PacketLineIn.isDelim(in.readString()));
+		assertTrue(PacketLineIn.isDelimiter(in.readString()));
 		assertEOF();
 	}
 

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

@@ -232,7 +232,7 @@ public class PacketLineIn {
 	 * @return true if the given string is {@link #DELIM}, otherwise false.
 	 * @since 5.4
 	 */
-	public static boolean isDelim(String s) {
+	public static boolean isDelimiter(String s) {
 		return s == DELIM;
 	}