Update to packaging 16.6

pip/_vendor/packaging/__about__.py

@@ -12,7 +12,7 @@ __title__ = "packaging"
 __summary__ = "Core utilities for Python packages"
 __uri__ = "https://github.com/pypa/packaging"
 
-__version__ = "16.5"
+__version__ = "16.6"
 
 __author__ = "Donald Stufft and individual contributors"
 __email__ = "donald@stufft.io"

pip/_vendor/packaging/markers.py

@@ -75,9 +75,14 @@ VARIABLE = (
     L("python_version") |
     L("sys_platform") |
     L("os_name") |
+    L("os.name") |  # PEP-345
+    L("sys.platform") |  # PEP-345
+    L("platform.version") |  # PEP-345
+    L("platform.machine") |  # PEP-345
+    L("platform.python_implementation") |  # PEP-345
     L("extra")
 )
-VARIABLE.setParseAction(lambda s, l, t: Variable(t[0]))
+VARIABLE.setParseAction(lambda s, l, t: Variable(t[0].replace('.', '_')))
 
 VERSION_CMP = (
     L("===") |

pip/_vendor/vendor.txt

@@ -7,6 +7,6 @@ CacheControl==0.11.6
 lockfile==0.12.2
 progress==1.2
 ipaddress==1.0.16  # Only needed on 2.6 and 2.7
-packaging==16.5
+packaging==16.6
 pyparsing==2.1.0
 retrying==1.3.3