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0de2467e6c
Start converting `struct odb_source_packed` into a proper pluggable `struct odb_source` by embedding the base struct and assigning it the new `ODB_SOURCE_PACKED` type. Furthermore, wire up lifecycle management of this source by implementing the `free` callback and taking ownership of the chdir notifications. Note that the packed source is not yet functional as a standalone `struct odb_source`, as it's missing all of the callback implementations. These will be wired up in subsequent commits. Further note that we're also registering a `chdir_notify` callback to reparent our path. This wasn't previously necessary (and still isn't at this point in time) because all paths are taken from the owning "files" source, and that source already handles the reparenting for us. But a subsequent commit will change that so that we're using the path of the "packed" source, and once that happens we'll need it to be updated when changing the working directory. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>