Caused by earlier sieve_default_name-related changes.

This caused a segfault in the test suite.

Using a location option for the default name makes no sense if its only used for the main personal script.

lib-sieve: storage: Implemented magic to make sieve_default script visible in main storage (e.g. from ManageSieve).

lib-sieve: util: program client: Fixed handing of situation when no input is provided to external program used as a command.
Previous fixes still omitted a few important aspects:
Connect return result wasn't actually passed up to program_client_run().
Default exit code was wrong.

lib-sieve: util: Fixed bug in t_realpath() normalization occuring with relative symlinks below root.
Also contains a few small code cleanups.

LDA Sieve plugin: Changed error handling so that each action log message can have up-to-date time stamps.
This change matches a change in LDA that is aimed at logging timing statistics.

Forgot to adjust a few things when the location types were introduced and documented.

This was quite fundamentally broken, not only due to previous change.

lib-sieve: file storage: Fixed bug that caused missing active symlink to cause a temporary error in some cases.

A conditional expression was inverted, causing the path to remain unnormalized.

Messed up the previous attempt.