Bug#995843: abook: missing licenses in d/copyright

[Bastian Germann]

Source: abook
Severity: serious
Version: 0.6.1-1

abook contains distribution licenses that are not copied to
debian/copyright. At least BSD-2-clause (xmalloc.c, misc.c), old-style
MIT (ldif.c), FSFULLR (configure, Makefile.in), X11 (install-sh), and
probably others.