dpkg-deb(1): Mention deprecation of bzip2 and lzma compressors

debian/changelog

@@ -28,6 +28,7 @@ dpkg (1.17.10) UNRELEASED; urgency=low
     - Expand Vcs-* field names into each supported field name in
       deb-src-control(5) to make it easier to search for them.
     - Change control.tar.gz reference to simply control.tar in deb(5).
+    - Document in dpkg-deb(1) -Z option that bzip2 and lzma are deprecated.
 
   [ Updated manpages translations ]
   * German (Helge Kreutzmann).

man/dpkg-deb.1

@@ -229,8 +229,8 @@ gzip (since dpkg 1.17.0) and \fIextreme\fP for xz.
 .TP
 .BI \-Z compress-type
 Specify which compression type to use when building a package. Allowed
-values are \fIgzip\fP, \fIxz\fP, \fIbzip2\fP, \fIlzma\fP, and \fInone\fP
-(default is \fIxz\fP).
+values are \fIgzip\fP, \fIxz\fP, \fIbzip2\fP (deprecated), \fIlzma\fP
+(deprecated), and \fInone\fP (default is \fIxz\fP).
 .TP
 .B \-\-uniform\-compression
 Specify that the same compression parameters should be used for all archive