Beginning of automated input file generator.

I'm trying to break the input format into a set of dicts that
are used to populate template files.  Not sure how to deal with
larger data (large meshes, for example).  This is the start
for the SIZE file.
Workaround for a likely gfortran bug in passing literals.

The 4.7.2 version of gfortran doesn't seem to like passing
the literal '2'; declaring it as variable fixes this problem.
Merge branch 'master' of github.com:maxhutch/nek5