ERT-356 - Some cleanup
Merge remote-tracking branch 'joaho/jpb/ERT-341-rebased-356' into ERT-356
ERT-356 - Fixed enkf_obs
ERT-356 - addr2line OSX workaround
ERT-341: Added function container_assert_size().
ERT-341: Fixed bug in enkf_node_deep_alloc() - did not check IMPL_TYPE
ERT-341: Added missing child nodes in container_config.
ERT-341: Added test of obs->measure for containers.