[skip ci]

  - add isPlugged and getPlugged methods,
  - add property getter name.

pointed out by OS.

This is crucial when debugging remotely using winpdb.

Make possible to read the output from the process lauching the process.

Synchronize submodule cmake

This corrects the issue detailed here:
https://github.com/jrl-umi3218/dynamic-graph-python/issues/2

Solution found by Florent Lamiraux.

Pointed out by A. Mallet.

Nicolas Mansard authored Jun 22, 2011 and Nicolas Mansard committed Jul 30, 2012

  If a signal contains a data deriving from Vector or Matrix, cast content into
  Matrix or Vector using plug machinery.

This commit detect when a statement is evaluated with PyRun_String run
with Py_eval_input. This seems to generate a Syntax Error. Thus if
an exception with Syntax Error is generated with Py_eval_input,
the python interpreter does a second pass with Py_single_input.
The string err is set appropriatly, out has to be checked.

This does not affect the compilation on Ubuntu 10.04.