Remove 'release' suffix from package name (#4014)

lib/spack/spack/test/url_parse.py

@@ -224,6 +224,10 @@ def test_std(self):
 
     # Download version
 
+    def test_release(self):
+        self.check('cbench_release_1.3.0.tar.gz', '1.3.0',
+                   'cbench')
+
     def test_snapshot(self):
         self.check('gts-snapshot-121130', '121130',
                    'gts')

lib/spack/spack/url.py

@@ -258,6 +258,7 @@ def strip_name_suffixes(path, version):
         '[._-]std',
 
         # Download version
+        'release',
         'snapshot',
         'distrib',