global: Use check-local in Makefile.am instead of overriding check directly This helps with dependency problems, like running "make check" in lib-storage without "make" first would try to compile the test programs too early and fail.

director: Support flush socket This allows specifying an URI to execute on user kill. It can be of form exec:/path/to/bin, unix:/path/to/socket or tcp:ip:port The location is sent FLUSH username-hash per killed user. You can execute some action there, and you are expected to return '+\nOK\n' as reply once you are done.

Add PIE and RELRO to binaries

Makefile: Fixed test program dependencies Explicit dependencies on .o or .lo files didn't seem to work properly and with high enough make -j value the build failed. Depending on the entire library guarantees that all the individual .o files have been built.

director: Optimized adding users to linked list during handshake.

Added director_username_hash setting to specify what part of the username is hashed. The default is "%u" meaning the full username. Another potentially useful value is "%d" for hashing only the domain (i.e. redirect users from the same domain always to same server so they can safely access each others' shared mailboxes).

director: Don't explicitly use base_dir. We're already chdired there, use relative paths.

director: Added initial testing framework and some debugging output. --HG-- branch : HEAD

director: Tell login proxy to notify director of open connections every director_user_expire/2 secs. --HG-- branch : HEAD

Added initial implementation of a director process (for NFS users). There are still some unimplemented features and bugs. Also changing mail server list doesn't yet make sure that other directors won't assign the same user to a different server at the same time. --HG-- branch : HEAD