[why?] test: Support local version identifier.

src/zc/buildout/tests/test_all.py

@@ -3436,7 +3436,7 @@ def buildout_txt_setup(test):
         os.path.join(eggs, 'zc.recipe.egg'),
         )
 
-egg_parse = re.compile(r'([0-9a-zA-Z_.]+)-([0-9a-zA-Z_.]+)-py(\d[.]\d+)$'
+egg_parse = re.compile(r'([0-9a-zA-Z_.]+)-([0-9a-zA-Z_.+]+)-py(\d[.]\d+)$'
                        ).match
 def makeNewRelease(project, ws, dest, version='99.99'):
     dist = ws.find(pkg_resources.Requirement.parse(project))