moves examples to SPECFEM2D/EXAMPLES and adds process.sh script for each to run a default simulation
adds USER_T0 capability to SPECFEM2D/ to fix simulation start times
updated README files for examples; added print line in checkgrid.F90 for USER_T0 ; added symbolic link for manual
added SOURCE files for Carl Tape's examples
updates some variable names in SPECFEM2D/ related to sources; adds new source code files compute_normal_vector.f90, prepare_initialfield.F90, initialize_simulation.F90, set_sources.f90, read_databases.f90, prepare_source_time_function.f90, save_openDX_jacobian.f90, prepare_color_image.F90, prepare_absorb.f90
updates source parameters in SPECFEM2D/; adds new file check_stability.F90
Added Abel_Brest and canyon as formal examples.
updates configure script, puts compiled binaries into bin/ subdirectory; fixes problem with MPI deadlocks
updated Par_file for all six examples to reflect recent changes; tested to make sure each one works
testing output_wavefield_snapshot option
added "sngl" within output_wavefield_snapshopt format statement to fix bug
added GMT/perl script for plotting wavefield snapshots; added three example figures; tested all examples.
added kernel example for Tape2007
added kernel example for Tromp2005
updated run scripts for examples
added sub-example to Tape2007 to illustrate reading in an external model (with internal mesh).
uses directory SEM/ for adjoint sources; removes trailing spaces from source code files
renames precision_mpi.h to precision.h; renames seismogram band codes from BHX/BHY/BHZ to BXX/BXY/BXZ; renames kernel file names to e.g. proc000000_rho_kappa_mu_kernel.dat; adds param_reader.c to handle more flexible parameter file formats
updates version number to 6.2.0 in source code files and manual
removed unused lines in fluid_solid external mesh; changed "negative" error message to "non-positive" when appropriate