Updated copyright notices to include the year 2018.
lib-storage: Add reason to mailbox_transaction_begin() Remove mailbox_transaction_set_reason().
global: Remove extra ';' to fix compiler errors Sun C doesn't like them.
global: Log internal storage error on failure
Updated copyright notices to include the year 2017.
mail-crypt: Remove dead assigment
mail-crypt: Do not attempt to cache keys on failure
mail-crypt: Do not attempt to cache freed keypair
mail-crypt: Add mail-crypt plugin