The parser wanted to create extruded volume begining systematically from 1. 
Thus, when there already existed volumes with number 1,2,3,etc, extruded volumes was created.

petsc matrices

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Test of metric as a shape measure. It uses the slot Rho instead of adding a new slot, define METRICSHAPEMEASURE in GmshDefines.h to activate !

Removed lots of warning introduced with my last commit, cleaned up a bit duplicateBoundaries, and introduced support for 2D for DuplicateBoundaries.

More cleanup is going to follow soon, especially in the modified part of commandline.

Addition of plugin DuplicateBoundary that allow one to modelize inter granular cracks with cohesive zones. 
Addition of the line command ComputeBestSeeds that allow one to optimize the placement of seeds in a microstructure to remove small edges from the Voronoï representation.
Small additions to cross3D and direction3D to compute the smoothness fo fields.

fix commandLine for partition with weights\ntri in the documentation, triangle in the code\nnow, both are allowed (only one should be allowed?)

- ParseString can now run in the current model directory (useful when parsing things with relative filenames)
- New View.Time option to select the timestep according to the time value

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set Geometry.AutoCoherence=2 to active this

prudently put between #if 0 #endif Those should allow
to produce better quality quad meshes and more robust
triangular meshes (random factor has disappeared) : 
Technically, the divide and conquer algo has been 
replaced by a bowyer-watson with robust predicates.

Implementation of the client-based flag -changed- for python clients (native and interfaced). Plus some cleanup.

Store one "changed" flag per client; this allows to correctly detect which client needs to be run when a parameter is changed.

Warning: this changes the onelab protocol: now at version 1.1 -- you'll need to upgrade all your clients.

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fine-tune setChanged (the real fix will be to store the _changed attribute for each client in the parameter's _clients map)

- if no client is given, set the changed flag for all the parameters;
- if a client name is given and "changed" is false, affect only the
 parameters that are owned exclusively by the client;
- if "changed" is true, affect all parameters that depend on this client