- Administrators now get properly notified about uncompiled global scripts and the inability of the sieve plugin to store global binaries.
- Improved binary load/save error handling and fixed a few smal bugs.
- Simplified ManageSieve error handling.

Made sure that scripts are only recompiled when the script file - or the symlink pointing to it - is strictly newer.

Fixed race condition occuring when multiple instances are saving the same binary (patch by Timo Sirainen).

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

Enabled (optional) support for Valgrind in the testsuite and fixed a few intricate bugs in the process.

Reversed stat() and open() on two occasions to make retrieved stat information guaranteed to be valid for the opened file and added error handling for various close() system calls.