Soprano - the Qt/C++ RDF framework

Soprano 2.7.4 is another bugfix release in the 2.7 series:

• Enabled large file support (_FILE_OFFSET_BITS=64) to fix large DB file locking on 32bit machines.
• Do not use an event loop when waiting for Virtuoso to initialize.
• In the socket client: simply close the connection in case of a timeout. We cannot recover from it anyway.