Adds catch, cppunit, spdlog, tinyxml(1 and 2), google benchmark (#2627)

* Adds catch, cppunit, spdlog, tinyxml(1 and 2), google benchmark

Tinyxml comes in two flavors, 1 and 2. Each comes in several
versions... So they cannot be easily united into a single package.

* Use CMakePackage and friends, add copyright

Also eleminate debug/release variants, since it no longuer fits in the
CMakePackage format.

* Remove unnecessary url

* spdlog now has tagged releases

* Remove unnecessary url argument

* Fewer quotes in cmake args, because magic

* Incorrect base class for tinyxml

var/spack/repos/builtin/packages/gbenchmark/package.py

@@ -0,0 +1,59 @@
+##############################################################################
+# 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 Gbenchmark(CMakePackage):
+    """A microbenchmark support library"""
+
+    homepage = "https://github.com/google/benchmark"
+    url = "https://github.com/google/benchmark/archive/v1.0.0.tar.gz"
+
+    version('1.1.0', '8c539bbe2a212618fa87b6c38fba087100b6e4ae')
+    version('1.0.0', '4f778985dce02d2e63262e6f388a24b595254a93')
+
+    def build_type(self):
+        return "Release"
+
+    def patch(self):
+        filter_file(
+            r'add_cxx_compiler_flag..fstrict.aliasing.',
+            r'##### add_cxx_compiler_flag(-fstrict-aliasing)',
+            'CMakeLists.txt'
+        )
+        filter_file(
+            r'add_cxx_compiler_flag..Werror',
+            r'##### add_cxx_compiler_flag(-Werror',
+            'CMakeLists.txt'
+        )
+
+    def cmake_args(self, spec, prefix):
+        if self.compiler.name == 'intel':
+            return [
+                "-DCMAKE_CXX_FLAGS=-no-ansi-alias -fno-strict-aliasing",
+                "-DCMAKE_C_FLAGS=-no-ansi-alias -fno-strict-aliasing",
+                "-DBENCHMARK_ENABLE_TESTING=OFF"
+            ]
+        return []