Add the new PML formulation for fluid-solid simulation
Merge pull request #118 from xiezhinan/devel

Add the new PML formulation for fluid-solid simulation
changed the name of NXE and NZE for clarity
added a warning about versions dot zero of a compiler
removed an unused variable
fix the PML fluid-solid implementation with LDDRK time scheme
Merge branch 'devel' of github.com:xiezhinan/specfem2d into devel
added doc/SEM_class_from_Yvon_Maday_to_Dimitri_Komatitsch_and_Jean_Pierre_Vilotte_04apr1995.pdf
Merge pull request #123 from komatits/devel

added doc/SEM_class_from_Yvon_Maday_to_Dimitri_Komatitsch_and_Jean_Pierre_Vilotte_04apr1995.pdf