Added error codes for VaultManager.
Added Serialise and Parse functions for maidsafe_error type.
print visualiser log to console if required
Added further VaultManager error codes.
Merge branch 'next' of github.com:maidsafe/MaidSafe-Common into next
Added functions to cast a maidsafe_error to and from an int.
Added error code.
avoiding deadlock in condition_variable.wait()
Use absolute path to exes if possible.
Added BOOST_DISABLE_ASSERTS defination