Comment lines to be able to use fort77

Up until now I could only complie this file using `g77` or the Intel
Fortran Compiler. By playing with `fort77`, it throwed an error on these
lines. I commented them and initial tests showed that there was no
difference on the final file. Synspec was still able to run.

These lines uses a fortran command called `SAVE`. I found this
explanation:

>  SAVE is a specification statement which can be used to ensure that
>  variables and arrays used within a procedure preserve their values
>  between successive calls to the procedure. Under normal circumstances
>  local items will become ``undefined" as soon as the procedure returns
>  control to the calling unit. It is often useful to store the values of
> certain items used on one call to avoid doing extra work on the next.

source: http://rsusu1.rnd.runnet.ru/develop/fortran/prof77/node156.html

Related to #24.
Compile Synspec and Rotin with fort77

Besides g77 and ifortran, it can now also compile them with fort77.

Related to #24.
Makes Travis install fort77

Instead of using gfortran or g77 as the fortran compiler, it now uses
fort77.