tests: JUnit system test: Added more ports to check first since ReplicationTest uses up to 12 OSDs. Hopefully, this will reduce the flakiness of ReplicationTest.
client: RPC Client: For DNS resolution specify no flags, effectively clearing the default "address_configured". This fixes issue 287 'Mount fails with "Host not found (authoritative)"'.
Updated to protobuf 2.5
servers: change the FederationID-provider to use the UUID of the cert
only. this is the part of the DN after "CN=..."
Merge branch 'master' of https://patrick.schaefer%40zib.de@code.google.com/p/xtreemfs/
Fixed compiling protobuf on Ubuntu 13.10
client: fixed compilation error using old boost versions
tests: deactivated scrub test in nightly tests
contrib: XtreemFSHadoopClient: Add read-/write buffer
Added .gitignore for protobuf-2.5
contrib: XtreemFSHadooClient: Add xtreemfs-specific parameters to set read-/write buffer size
docs: Add description of the read-/write buffer in the XtreemFSHadoopClient in to the user guide
servers: Remove synchronization for HeartbeatThread#shutdown().

The synchronization is a leftover from a previous stage of development.
In recent commits synchronization has been removed from the other
methods and can be removed from shutdown too.
Synchronization is not necessary since shutdown is idempotent.
servers: multihoming: Add the matching network in CIDR notation for local addresses to the address mappings.
servers: multihoming: Use POSIX signal USR2 on OSDs to renew their address mappings.
servers: multihoming: Remove org.apache.commons.net dependency.
servers: multihoming: Try finding the localHostAddress and set it as globally accessible.
Prefer local networks over global ones when resolving an UUID.
servers: multihoming: Wait on a monitor in HeartbeatThread to enable immediate address renewals.
servers: multihoming: Move the address renewal signal handler to the HeartbeatThread and make it configurable.

This makes the HeartbeatThread responsible for the signal handling. OSD
and MRC initialize it in regard to the new setting 'renewal_signal'.
The new setting is briefly documented.
servers: multihoming: Add config paramaters for multihoming and address renewal signals.