COMPRESS-324 be mor lenient when detecting GNU long name entries

WHATSNEW

@@ -18,6 +18,10 @@ Fixed bugs:
    jars.  This resulted in jar files that couldn't be read by Java5.
    Bugzilla Report 58428
 
+ * <untar> will now detect GNU tar longname/link records even if they
+   don't use the names used by GNU tar itself.  star is known to
+   create archives of that kind.
+   https://issues.apache.org/jira/browse/COMPRESS-324
 
 Other changes:
 --------------

src/main/org/apache/tools/tar/TarEntry.java

@@ -706,8 +706,7 @@ public class TarEntry implements TarConstants {
      * @return true if this is a long name extension provided by GNU tar
      */
     public boolean isGNULongLinkEntry() {
-        return linkFlag == LF_GNUTYPE_LONGLINK
-            && name.equals(GNU_LONGLINK);
+        return linkFlag == LF_GNUTYPE_LONGLINK;
     }
 
     /**
@@ -716,8 +715,7 @@ public class TarEntry implements TarConstants {
      * @return true if this is a long name extension provided by GNU tar
      */
     public boolean isGNULongNameEntry() {
-        return linkFlag == LF_GNUTYPE_LONGNAME
-                           && name.equals(GNU_LONGLINK);
+        return linkFlag == LF_GNUTYPE_LONGNAME;
     }
 
     /**