Bug#57237: In apt postinst the cp /usr/doc/examples/sources.list /etc/apt/sources.list don't work because the link from /usr/doc to /usr/share/doc isn't exist that time

[Risko Gergely <risko@njszki.hu>]

Package: apt
Version: 0.3.17

In apt's postinst script the creating of symlink to /usr/share/doc from
/usr/doc must be before than cp /usr/doc/examples/sources.list
/etc/apt/source.list because if you install the apt first this symlink
won't exist and it'll confuse the postinst cp. I think this is enough
important, because the make newrelease in boot-floppies isn't working now,
because of this bug.

Thank you,
Risko Gergely
Debian bf translator