forensics-extra is marked for autoremoval from testing

[Debian testing autoremoval watch]

forensics-extra 1.8 is marked for autoremoval from testing on 2017-09-04

It (build-)depends on packages with these RC bugs:
841544: guymager: FTBFS: aaff.cpp:82:22: error: flexible array member 't_AffSegmentHeader::Name' not at end of 'struct _t_Aaff'
853374: dislocker: ftbfs with GCC-7
853438: guymager: ftbfs with GCC-7
853570: ncrack: ftbfs with GCC-7
871349: ispell-uk: FTBFS: The encoding pragma is no longer supported at ../../bin/verb_reverse.pl line 12.