Init devel branch.

-T : add option -checktess; improve options -stat*, add 3dec format, fix
     minor bugs.
-FM: fix regularization bug, add individual extension support to option
     -format (for fem-evps output); improve options -stat*, fix minor
     bugs.
-MM: fix options -domain, -scale and -nset.
-O : fix minor bugs.
-VS: fix option -slicemesh, document option -showmeshslice, add option
     -camerasky.
-FM, -MM, -VS: fasten mesh reconstruction (3D->2D, 2D->1D, 1D->0D).
General: fix code for compilation warnings.
Clean FM examples in documentation.

Remove "advanced use examples" section. Retain mesh partitioning
and orthotropic meshing examples.
Fix multimeshing in FM.

This temporary fix undoes a previous fix applied for Mac OS X support,
but which actually broke multimeshing on Linux (and probably other
platforms, including Mac OS X itself). Mac OS X support would require a
more reliable fix.
Add node periodicity condition file to MM.

The file provides the information necessary to apply periodicity
conditions. It provides a list of pairs of nodes, where each pair is
made of nodes which correspond to each other on the opposite faces of
the tessellation.
Fix documentation (introduction).

Change development repository from sourceforge to GitHub.
Fix typos.
Fix regularization of cylindrical domains.

When using -cylinderfacet with a high enough value, the resulting edges
became smaller than sel (used in regularization), leading to a crash.  A
test on whether the edge to delete is a domain edge has been added. In
such a case, the deletion is now skipped. The fix applies to any domains
(not just cylinders).
Fix loading of 2nd-order MM meshes in MM and VS.

Fix reconstruction of a 2D mesh from a 3D mesh for 2nd-order MM meshes
(crude node ordering issue).
Fix memory problem in VS.

Fix memory free'ing call in the data loading routine.
Rewrite 1D meshing in FM.

The new implementation fixes a bug revealed in the previous algorithm,
(http://sourceforge.net/mailarchive/forum.php?thread_name=
 SNT002-W161413B47DA82E0218E6C44D4B00%40phx.gbl&forum_name=neper-users):
$ neper -T -n 200 -id 1 -morpho equiaxed -domain cylinder 300 300
$ neper -FM n200-id1.tess -maxff 20 -format abq
Another improvement is that both vertices are considered in the same
way. The previous algorithm could lead to non-symmetric output from
symmetric input.
Fix msh output in FM and MM.

In a .msh file, when writing a mesh with elements of different
dimensions (several of: 0D, 1D, 2D or 3D), the elements of a given
dimension were always numbered from 1, and therefore several elements
could have the same id, which is not allowed (missing elements in the
Gmsh GUI). The elements are now numbered contiguously from 1.
Rename nset in FM for cylindrical domains.

The "bot" and "top" nset labels are changed to "z0" and "z1" for
consistency with cuboidal domains.
Add 3dec geometry format to FM.

3dec was available in T, but not in FM.
Clean code.

Removed unused net_lib and NSite directories.
Fix documentation.

Added notice for non-compatibility with Gmsh 2.5.1, updated examples,
fixed typos.
Merge branch 'devel'

- module -T: added 3dec geometry format, added option -checktess, minor
  improvements.
- module -FM: added 3dec geometry format, fixed msh output for meshes
  with different element dimensions; changed "top" and "bot" nset names
  for cylindrical domains to "z0" and "z1", minor bug fixes; improved
  fev format support; added individual file extension support in options
  -stattess and -statmesh.
- module -O:  minor bug fixes.
- module -MM: fasten up meshing; fixed -domain, -scale and -nset
  options,
  add .nper file for periodicity conditions; fixed msh output for meshes
  with different element dimensions; minor other bug fixes.
- module -VS: fasten up meshing reconstruction and PNG file generation,
  added option '-camerasky', added option '-showeltedge', minor fixes.
- documentation: minor fixes.
- General: minor fixes.