Be explicit about signedness of data in binary code representation. Some architectures, like ARM, differ in this respect.

LDA-Sieve plugin: fixed copy-paste mixup between sieve_after and sieve_before. If only a sieve_after script was active, nothing would have been executed. Patch by Mike Abbott.

Imap4flags: now reads initial flags and keywords from supplied mail. Upon delivery this is empty, which still matches the specification.

Testsuite: added support for testing delivered messages by looping these back as the evaluated message. Added tests for the fileinto command.

Fixed bug in the derivation of the binary path from the script path. A bare filename would yield a path relative to root.

Include: fixed assertion fail caused by missing initialization (bug surfaces only for stored binaries).

Sieve-filter: removed unnecessary MAILBOX_TRANSACTION_FLAG_REFRESH flag for mailbox_transaction_begin().