Fix xmlnode data leak in carbons_xml_stripped_cb

See merge request !3

debian: Add description

Closes #2

See merge request !2

Closes: #2

Give hint to dh_shlibdeps to find purple-plugins

See merge request !1

Use "dh_shlibdeps -l/usr/lib/purple-2" to find the library libjabber.so.0 located there, which is needed for package creation.

Revert "Makefile enhancing"

Makefile enhancing

Also save it as artifact
And Windows dependencies should be cached

For some reason there is no build/carbons.so?

Also fix env variable replacement... to much makefile editing

This should play nicer with other plugins

Has not been an issue, but the docs tell me not to
Not sure it does anything for message carbons anyway

Additionally remove unnecessary check
And use constant for jabber protocol ID

Also put mocks in own file

Also make the 'security check' static again

cmocka docs falsely claim it is xunit, but it's junit xml