Merging upstream version 2.13.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

CHANGES

@@ -1,3 +1,35 @@
+2023-08-23 Jerry Lundström
+
+    Release 2.13.1
+
+    This release fixes a few issues with in-progress queries and the TCP
+    transport module.
+
+    When using stateful connections, such as TCP, if the full query couldn't
+    be sent in one go then the query and connection could get stuck as
+    "in-progress".
+    This could easily happen if you limited the in-flight queries to 1 and
+    sent very large DNS messages using the stream binary format.
+    Additional socket ready checks has been added to flush in-progress
+    queries as quickly as possible.
+
+    The TCP module's handling of errors when continuing in-progress queries
+    has been fixed. Previously it would interpret EAGAIN as an unrecoverable
+    error and trigger a reconnect, dropping the quer-y/ies in-progress for
+    that connection.
+
+    Other changes:
+    - Fix input data buffer to allow for maximum binary blob wire format, 2 byte size + max DNS message
+    - Mention PowerTools repository for building on CentOS etc
+
+    56e180c In-progress, bitmaps, clang-format
+    bbc48db In-progress
+    059619d In-progress
+    752575a TCP EAGAIN
+    d51a453 Max input
+    76764d7 64k TCP/DoT payload support
+    8201f50 Doc
+
 2023-06-15 Jerry Lundström
 
     Release 2.13.0