fgsl 1.0.0 (new formula)

Hi guys,


I created a formula for FGSL, the Fortran bindings to the GNU Scientific Library. I figured homebrew-science would make a nice home for this one.

Everything seems to work fine, but I will of course make whatever changes you would like me to. This is my first attempt at making a Homebrew Formula, so please go easy on me :-)

By the way someone was asking for this Formula just a couple of days ago at Homebrew/homebrew#35327