The grand language renaming bonanza (#3278)

* Removing FORTRAN samples because OS X case-insensitive filesystems :-\

* Adding Fotran samples back

* FORTRAN -> Fortran

* Groff -> Roff

* GAS -> Unix Assembly

* Cucumber -> Gherkin

* Nimrod -> Nim

* Ragel in Ruby Host -> Ragel

* Jade -> Pug

* VimL -> Vim script

samples/Fortran/sample3.F

@@ -0,0 +1,25 @@
+c comment
+* comment
+
+      program main
+
+      end
+
+      subroutine foo( i, x, b )
+      INTEGER            i
+      REAL               x
+      LOGICAL            b
+
+      if( i.ne.0 ) then
+         call bar( -i )
+      end if
+
+      return
+      end
+
+      double complex function baz()
+
+      baz = (0.0d0,0.0d0)
+
+      return 
+      end