Import .gitignore from SVN.
Merge pull request #2 from QuLogic/git-transition

Import .gitignore from SVN.
Merge pull request #5 from geodynamics/devel

Merge Zhinan from devel to master
Add source number 7
Merge pull request #6 from pcristini/master

Add source number 7
fix one error in specfem2D.F90

--error in determination of point number on PML interface when doing
adjoint inversion inside fluid-solid medium
Merge pull request #7 from xiezhinan/devel

fix one error in specfem2D.F90
Merge branch 'master' into QA