[arch-general] lastsync file on mirrors

[Dieter Plaetinck]

is it just me or did the lastsync format change?
IIRC the lastsync file was 1 file in the root of the repo, with the
date in it in string format.

now the lastsync files are like so:
<path>/{core,extra,testing,...}/os/{i686,x86_64}/lastsync
each containing a unix timestamp.

note: no lastsyncfile for any 'any' architecture directory, and also
none for either architecture for the community-testing repo.

maybe the easiest is to go back to 1 global file, as long as we can
make sure somehow that rsync will sync the lastsync file as last
thing.

I maintain an (official) mirror and would like to monitor these files to
prevent out-of-date issues.

Dieter