adds src/tomography directory with summation, smoothing and model update tools
Modif to fix problem of generate databases with DSM
Modif coupling
Modif coupling
adds and updates tomography tools
updates m4/ and configuration script (fixes configuration with CUDA and intel ifort compilers)
redirects file output of mesh resolutions checks in xmodel_update
fixed the timing routine of SCOTCH that did not compile on MacOS
Merge branch 'devel' of https://github.com/geodynamics/specfem3d into devel
Last modif to validate new coupling with DSM
Very last modification for coupling with DSM
Remove comment in mesh chunk
Fixed problem 1 and 4 from DK (no change needed for 4)
removed white spaces
Clean DSM directory + change TRACTION_PATH + rename 2 mesh-chunk subroutines
Change in mesh-chunk subroutines
fix : use pinned buffer to transfer to GPU
Modifs earth chunk meshfem3d
Clean version of convolve_source_timefunction.csh
added README_inversion_package_list_of_things_to_do.txt