Add function listViewEntries

This function associates the list of complete names of ports
to the view names; ie. it gives column names for all views
(Closes 3475367)

Conflicts:

	src/pyvle.cpp
Fix default return on listDynamicObservables

If dynamic is not found, there was no return statement,
which leads to a seg fault.
Fix missing addValueCondition

We fix missing addValueCondition and check type on addRealCondition,
addStringCondition etc. (Closes #3497691)
Complete the pyvle_condition_get_value_type

For TUPLE TABLE XMLTYPE and MATRIX vle types, the function
pyvle_condition_get_value_type has been completed.
Add a function addXMLCondition

This function was missing of pyvle.
Update AUTHORS
Add unittests for opening and saving vpz's
Add python file objects support for vpz file

The Vle `__init__' and `save' methods now can deal with either strings
(representing filenames) or python file objects. This allow the vpz's to
be opened from and saved in every object which looks like a file object,
including buffers like the builtin cStringIO python module.
Upgrade to vle-1.1

- Test packages are dynamically compiled.
- Outputs are now Matrices.
- For now, no replicas.
Fix unit test call

VLE_HOME is now given as argument to the unit test calling.
Fix missing include of glibmm

The file glibmm/exception.h was missing.
Update README