+ - if we have zlib builtin insert add a dummy gzip compressor for FileFD
+ - do the same for bz2 builtin if available
+ * methods/bzip2.cc:
+ - remove it as the functionality for all compressors can be
+ provided by gzip.cc now with the usage of FileFD
+ * apt-pkg/contrib/fileutl.cc:
+ - use libz2 library for (de)compression instead of the bzip2 binary as
+ the first is a dependency of dpkg and the later just priority:optional
+ so we gain 'easier' access to bz2-compressed Translation files this way
+ * cmdline/apt-get.cc:
+ - print list of autoremoves in alphabetical order (Closes: #639008)