Bug#834797: lintian: depends on libdata-alias-perl, broken with Perl 5.24

[Jakub Wilk <jwilk@debian.org>]

Hi Niko!

Thanks for the bug report.

* Niko Tyni <ntyni@debian.org>, 2016-08-19, 09:42:
> This package depends and/or build-depends on libdata-alias-perl, which 
> breaks with Perl 5.24 (currently in experimental.)

This dependency was added in 516add8dc237 "to avoid copying large texts 
in memory". But my understanding is that Perl >= 5.20 has copy-on-write 
strings[0], so this optimization is no longer necessary. Jessie has a 
sufficiently new version, so the use of Data::Alias can be safely 
dropped.

[0] http://perldoc.perl.org/perl5200delta.html#Performance-Enhancements

> In some cases the 'refaliasing' feature in Perl >= 5.22 may be a 
> replacement;

(Lintian needs to be backportable to stable, so we couldn't easily use 
this feature yet.)

--
Jakub Wilk