debian/control: Add explicit runtime dependency on python3-distutils as it was dropped in src:python3.6 3.6.5~rc1-2.

Update terminology used in docs about exclusion options. Thanks to Paul Wise for the idea. (Closes: #893324)

Should help more people find these options.

Gbp-Dch: ignore

Show the list of supported file types in the manual and --help output. We can copy-paste this into the website, at least. Thanks to Jonathan Dowland for the suggestion. (Closes: #893443)

Use our bin/diffoscope wrapper in manpage generation to ensure we are using the local version of diffoscope.

This is to help people find this option while grepping through the
manual page.

Closes: #893324
Gbp-Dch: Short
Signed-off-by: Mattia Rizzolo <mattia@debian.org>

Gbp-Dch: ignore

Support the case where the python3-xattr package is installed but python3-pyxattr is not. Based on an patch by Doug Freed. (Closes: #892240)

Signed-off-by: Mattia Rizzolo <mattia@debian.org>

Obviously, UnicodeDecodeErrors are right behind you.

Gbp-Dch: Ignore
Signed-off-by: Mattia Rizzolo <mattia@debian.org>

e.output (i.e., the command's stderr) is now already UTF-8 encoded at
its source.

Closes: #891903
Signed-off-by: Mattia Rizzolo <mattia@debian.org>

tempfiles: save a bunch of syscalls, by resetting the permissions only when we actually need to do it.

Signed-off-by: Mattia Rizzolo <mattia@debian.org>

Recursively reset the permissions of temporary directories prior to deletion to ensure that non-writable permissions such as 0555 are removed and do not cause a traceback. (Closes: #891363)

Additionally extract the classes.dex file from .apk files; apktool does not do this by default which was was preventing us recursing into it to find differences. Thanks to Hans-Christoph Steiner <hans@eds.org> for the report. (Closes: #890904)