lib-storage: convert raw to use container_of

global: unsigned int:1 -> bool:1 perl -i -pe 's/unsigned int ([^,:;]+):1;/bool $1:1;/' **/*.[ch]

lda/lmtp: Moved common raw mailbox allocation code to raw-storage.

lda/lmtp: Moved raw user creation code to common raw_storage_create_from_set()

Avoid including mailbox-list-private.h everywhere. --HG-- branch : HEAD

lib-storage: *_mailboxes don't descend from index_mailbox anymore, it's now a context. --HG-- branch : HEAD

index-storage: Simplified the way transactions are are created/finished. Removed also mail_storage.class_init/deinit since they're no longer used for anything. --HG-- branch : HEAD

Mailbox opening and closing APIs changed. --HG-- branch : HEAD

deliver: Added -c parameter to provide path to delivered mail. This allows maildir to save it using hard links. --HG-- branch : HEAD

Support returning MAIL_FETCH_FROM_ENVELOPE. --HG-- branch : HEAD

Added raw storage for opening single-mail files/streams as mailboxes. --HG-- branch : HEAD