/usr/lib/purple-2/perl/auto/Purple/autosplit.ix is in libpurple0 1:2.10.9-0ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | # Index created by AutoSplit for blib/lib/Purple.pm
# (file acts as timestamp)
1;
|