New packages: Chill and IEGenLib (#11406)

* Add Chill package
* Add IEGenLib package, a dependency of Chill

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

@@ -0,0 +1,26 @@
+# Copyright 2013-2019 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class Iegenlib(AutotoolsPackage):
+    """Inspector/Executor Generation Library for manipulating sets
+       and relations with uninterpreted function symbols. """
+
+    homepage = "http://github.com/CompOpt4Apps/IEGenLib"
+    git      = "https://github.com/CompOpt4Apps/IEGenLib.git"
+    url      = "https://github.com/CompOpt4Apps/IEGenLib/archive/fc479ee6ff01dba26beffc1dc6bacdba03262138.zip"
+
+    maintainers = ['dhuth']
+
+    version('master', branch='master')
+    version('2018-07-03',
+        url="https://github.com/CompOpt4Apps/IEGenLib/archive/fc479ee6ff01dba26beffc1dc6bacdba03262138.zip",
+        sha256='b4c0b368363fcc1e34b388057cc0940bb87fc336cebb0772fd6055f45009b12b')
+
+    depends_on('cmake@2.6:', type='build')
+    depends_on('isl')
+    depends_on('texinfo', type='build')