Standardize package names: lower-case, not Mixed_CASE (#2475)

* Rename packages

* Upcasing depends_on() in packages.

* Downcased extends('r')

* Fixed erroneously changed URL that had slipped through.

* Fixed typo

* Fixed link from documentation into package source code.

* Fixed another doc problem.

* Changed underscores to dashes in package names.

* Added test to enforce lowercase, no-underscore naming convention.

* Fix r-xgboost

* Downcase more instances of 'R' in package auto-creation.

* Fix test.

* Converted unit test packages to use dashes not underscores

* Downcase `r` in the docs.

* Update module_file_support.rst

Fix r->R for class R.

var/spack/repos/builtin/packages/etsf-io/package.py

@@ -0,0 +1,67 @@
+##############################################################################
+# Copyright (c) 2013-2016, Lawrence Livermore National Security, LLC.
+# Produced at the Lawrence Livermore National Laboratory.
+#
+# This file is part of Spack.
+# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
+# LLNL-CODE-647188
+#
+# For details, see https://github.com/llnl/spack
+# Please also see the LICENSE file for our notice and the LGPL.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License (as
+# published by the Free Software Foundation) version 2.1, February 1999.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
+# conditions of the GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+##############################################################################
+
+from spack import *
+
+
+class EtsfIo(Package):
+    """ETSF_IO is a library implementing the Nanoquanta/ETSF file
+    format specifications.
+
+    ETSF_IO enables an architecture-independent exchange of crystallographic
+    data, electronic wavefunctions, densities and potentials, as well as
+    spectroscopic data. It is meant to be used by quantum-physical and
+    quantum-chemical applications relying upon Density Functional Theory (DFT).
+    """
+
+    homepage = "http://www.etsf.eu/resources/software/libraries_and_tools"
+    url = "https://launchpad.net/etsf-io/1.0/1.0.4/+download/etsf_io-1.0.4.tar.gz"
+
+    version('1.0.4', '32d0f7143278bd925b334c69fa425da1')
+
+    depends_on("netcdf-fortran")
+    depends_on("hdf5+mpi~cxx", when='+mpi')  # required for NetCDF-4 support
+
+    def install(self, spec, prefix):
+        options = ['--prefix=%s' % prefix]
+        oapp = options.append
+
+        # Specify installation directory for Fortran module files
+        # Default is [INCLUDEDIR/FC_TYPE]
+        oapp("--with-moduledir=%s" % prefix.include)
+
+        # Netcdf4/HDF
+        hdf_libs = "-L%s -lhdf5_hl -lhdf5" % spec["hdf5"].prefix.lib
+        options.extend([
+            "--with-netcdf-incs=-I%s" % spec["netcdf-fortran"].prefix.include,
+            "--with-netcdf-libs=-L%s -lnetcdff -lnetcdf %s" % (
+                spec["netcdf-fortran"].prefix.lib, hdf_libs),
+        ])
+
+        configure(*options)
+
+        make()
+        make("check")
+        make("install")