fixed (?) long-standing mesh-size/geometry-size dependence in Netgen

* removed unused stuff (more to come)
* moved remaining into Common

  did in high
* added mesh generation error log summary
* removed Parallel subdir (this is now handled by the message class)
* removed Box subdir and consolidated batch processing in a single
  routine
* made List_T into a class
* reduced dependencies in Pview*.h so we can eventually add the post-pro
  interface to the public API

better "make lib" (cannot simply merge static libs with ar on linux)

  integer tags per step data
- ported Eigenvectors and StreamLines plugins to the new post-pro API

add a Universal Transverse Merctor field, add latitude / longitude and UTM coordinates in Plugin/GSHHS.cpp

change new post API to allow multiple meshes in a single view (different
meshes in different steps)

fix ordering of face vertices on quad faces in revert()

rewrote Pplugin(Triangulate) to use our in-house divide and conquer algo
removed triangle from contrib
reactivated OCC STL meshing

fix dangerous clean