Upgrade NetCDF to 4.1.2

Also, fixed Fortran dependency to reflect Homebrew style post-refactor.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/netcdf.rb

@@ -1,38 +1,34 @@
 require 'formula'
 
+def fortran?
+  ARGV.include? '--enable-fortran'
+end
+
 class Netcdf < Formula
-  url 'http://www.unidata.ucar.edu/downloads/netcdf/ftp/netcdf-4.1.1.tar.gz'
+  url 'http://www.unidata.ucar.edu/downloads/netcdf/ftp/netcdf-4.1.2.tar.gz'
   homepage 'http://www.unidata.ucar.edu/software/netcdf/'
-  md5 '79c5ff14c80d5e18dd8f1fceeae1c8e1'
+  md5 '4a94ebe2d998d649159aa5665c83fb1a'
 
   depends_on 'hdf5'
-  depends_on 'gfortran' if ARGV.include? '--fortran'
 
   def options
-    [['--fortran', 'Compile with Fortran support']]
+    [['--enable-fortran', 'Compile Fortran bindings']]
   end
 
   def install
+    ENV.fortran if fortran?
+
     # HDF5 is required to create and access files in the version 4 format
-    hdf5 = Formula.factory('hdf5')
+    hdf5 = Formula.factory 'hdf5'
 
     args = ["--disable-dependency-tracking",
             "--prefix=#{prefix}",
             "--with-hdf5=#{hdf5.prefix}",
             "--enable-netcdf4",
             "--enable-shared"]
-    args << "--disable-fortran" unless ARGV.include? '--fortran'
+    args << "--disable-fortran" unless fortran?
 
     system "./configure", *args
     system "make install"
   end
-
-  def caveats; <<-EOS
-To build with (experimental) fortran support:
-  brew install netcdf --fortran
-
-You may have to set FCFLAGS and FFLAGS to be consistant with Homebrew's use
-of C compilers in order for the brew to install correctly.
-    EOS
-  end
 end