Moved f2py lab to the appendix.
reorganized directories for the f2py lab.
Added first problem to f2py lab.
Added a modified version of fssor.f90 to the f2py lab.
Added a test script for the wrapped fssor subroutine.
Added a setup script for the fssor function.
A few edits to make the solution to the first problem work.
Clarified the calling procedure for f2py.
Added the first example of a signature file.
Added a setup file for the ftridiag example so that it is consistent with
the fssor problem.
Merge branch 'master' into wrapping
Merge branch 'master' into wrapping
Merge branch 'master' into wrapping
Merge branch 'master' into wrapping
Merge branch 'master' into wrapping
Merge branch 'master' into wrapping
Merge branch 'master' into wrapping
Merge branch 'master' into wrapping
Merge branch 'master' into wrapping
Merge branch 'master' into wrapping