srclibs should support NoSourceSince
I just wrote a test script to make sure that the source git repo in srclibs/ files is still reachable. I found about 100 that were not. Seems to be that NoSourceSince:
makes sense in those cases. The value could be the last known commit ID, taken from the metadata files that use that source lib.
@Rudloff @relan @uniqx @Bubu @licaon-kter what do you think?
This would probably require a backport to fdroidserver 1.1.x since it will try to read all the related metadata files, but that should not be too much work.