Bug#970234: consider dropping "No hard links in source packages"

[Helmut Grohne <helmut@subdivi.de>]

Package: debian-policy
Version: 4.5.0.3
Severity: wishlist

Jakub stumbled into the "No hard links in source packages" requirement
added around 1996 and couldn't make sense of it. Neither could Christoph
nor myself. tar does support hard links just fine. lintian does not
check this property. sugar-log-activity/38 is an example package
violating the property. It is shipped in buster and technically
rc-buggy though no bug is filed about it.

I believe that the requriement needs a rationale. Failing that, it
should be dropped.

Helmut