GetStatistics for 2D meshes gives now mean value quality also

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isInside tolerance in ref coordinates

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Remeshing multiple patches (eg capot.geo) ok for all 2D meshers (added check normals for all patches)

integration points (order 8 meshes 10 times faster) + correct a bug in
dg for non iso-parametric in implicit

Mesh.RemeshParametrization=1; //(0) harmonic (1) conformal 
Mesh.RemeshAlgorithm=1; //(0) nosplit (1) automatic (2) split metis
!!! This replaces old parser stuff such as Compound Surface()={} Harmonic_NoSplit;
!!! Default values are harmonic and automatic
TODO: change this in FLTK/optionWindow.cpp

* new option to recombine all tri meshes, whatever the specific setting for a given surface
* libmatch -> libblossom (there's a libMatch.dylib in the default MacOS install)

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- boundary of combined entities in parser

* don't allocate 0-sized kdtree 

by comparing the orientation of a line element on the boundary w.r.t. its 
connected surface element. 

However, this fails when the 3D Delaunay changes the 1D mesh (since we don't 
recover it yet).

This commits changes the algorithm to use the OpenCASCADE code path (where
we just compare one normal, pointwise).