Bug#790932: lintian: Test for UPX compression of binaries does not work

[Niels Thykier <niels@thykier.net>]

Package: lintian
Version: 2.5.32
Severity: normal

$ apt-get instal upx
$ upx -9 /bin/ls -o test
$ LINTIAN_ROOT=. perl -I. helpers/coll/objdump-info-helper test | \
    grep -i upx

If it worked, the last line should say "UPX: yes".

It seems that our "head $binary | grep -q 'packed.*with.*UPX'" is no
longer suffient.  At the same time, it takes a considerable time to
execute that pipeline.  On 500 ELF files from
linux-image-4.0.0-2-amd64, it consumes 3 out of 4.5 seconds.

I am split between fixing the code (making it use "strings" and
running it in a check) vs just dropping it, given it hasn't worked for
at least 2 years (and likely more).

~Niels