libe2p: teach e2p_jrnl_feature2string() about the 64-bit journal feature

This will allow dumpe2fs to correctly display the 64-bit journal
feature, if it is enabled.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/lib/e2p/feature.c b/lib/e2p/feature.c
index db85365..9691263 100644
--- a/lib/e2p/feature.c
+++ b/lib/e2p/feature.c
@@ -104,6 +104,8 @@
 
        {       E2P_FEATURE_INCOMPAT, JFS_FEATURE_INCOMPAT_REVOKE,
                        "journal_incompat_revoke" },
+       {       E2P_FEATURE_INCOMPAT, JFS_FEATURE_INCOMPAT_64BIT,
+                       "journal_64bit" },
        {       E2P_FEATURE_INCOMPAT, JFS_FEATURE_INCOMPAT_ASYNC_COMMIT,
                        "journal_async_commit" },
        {       0, 0, 0 },