Add support for /etc/apt/auth.conf.d/*.conf (netrcparts)

This allows us to install matching auth files for sources.list.d
files, for example; very useful.

This converts aptmethod's authfd from one FileFd to a vector of
pointers to FileFd, as FileFd cannot be copied, and move operators
are hard.

1 files changed, 1 insertions, 0 deletions

diff --git a/doc/examples/configure-index b/doc/examples/configure-index
index 99aedfd19..3dd6e0afc 100644
--- a/doc/examples/configure-index
+++ b/doc/examples/configure-index
@@ -399,6 +399,7 @@ Dir "<DIR>"
   Etc "<DIR>" {
      Main "<FILE>";
      Netrc "<FILE>";
+     NetrcParts "<DIR>";
      Parts "<DIR>";
      Preferences "<FILE>";
      PreferencesParts "<DIR>";