Merge branch 'stitch_mesh' of https://github.com/jwpeterson/libmesh

This branch optimizes SerialMesh::stitch_meshes.
Merge branch 'stitch_mesh' of https://github.com/jwpeterson/libmesh

John updated the branch to pass the tolerance down.
Merge branch 'master' of github.com:libMesh/libmesh

Merging master.
Switch some cout/cerr uses to libMesh::out/err
Merge branch 'master' of github.com:libMesh/libmesh
metis refresh
refresh parmetis
generated files
use LIBMESH_TLS instead of __thread
Merge pull request #96 from roystgnr/libmesh_out_err

Switch some cout/cerr uses to libMesh::out/err
Switching to relative tolerance check (relative to the smallest
edge length on the surfaces being stitched) in stitch_meshes().
Adding misc. MOOSE references.
Merge pull request #99 from benkirk/metis_refresh

Refresh Metis and Parmetis to latest releases
do not build empty files
nevermind, leaving this file will help if some platform requires preprocessor macros for openMP workarounds.  unlikely, but better safe.
Regenerate publication webpage.
Update yearly publication counts.
fix weird NULL comparison
fix unnecessary comma causing issue for some compilers
I cover with pgi-13.4 now too.