Made sure to initialize return value in Fortran logging function.
Made a Fortran library that works with 'go build'.

* Figured out that Go will recognize and incorporate arbitrary *.syso
  files, which are just normal object files.  This means the Fortran
  code can be made into a combined object file, or "library", and Go
  will automatically build it in.
* Added targets and rules to makefile to create "syso library" for Go
  from the Fortran object files.  This is done with partial linking.
* Added "syso library" to ignorables.
* Removed search for lbfgsb library from Cgo directives since it is now
  incorporated differently.
* Updated example program to use third-party package import syntax since
  it now works.