* parse-packet.c (parse_plaintext), packet.h, plaintext.c

(handle_plaintext): Fix bug in handling literal packets with zero-length
data (no data was being confused with partial body length).

* misc.c (pct_expando), options.skel: %t means extension ("jpg"). %T means
MIME type ("image/jpeg").

* import.c (import_one): Only trigger trust update if the keyring is
actually changed.

* export.c (do_export_stream): Missing a m_free.

g10/packet.h

@@ -275,6 +275,7 @@ typedef struct {
     u32  len;		  /* length of encrypted data */
     IOBUF buf;		  /* IOBUF reference */
     byte new_ctb;
+    byte is_partial;      /* partial length encoded */
     int mode;
     u32 timestamp;
     int  namelen;