Move 2.7 to 2 (#635)

Closes #579.

stdlib/2/posixpath.pyi

@@ -0,0 +1,50 @@
+# Stubs for posixpath (Python 2)
+#
+# NOTE: This dynamically typed stub was automatically generated by stubgen.
+
+from typing import Any, AnyStr, List
+from genericpath import *
+
+curdir = ... # type: Any
+pardir = ... # type: Any
+extsep = ... # type: Any
+sep = ... # type: Any
+pathsep = ... # type: Any
+defpath = ... # type: Any
+altsep = ... # type: Any
+devnull = ... # type: Any
+
+def normcase(s): ...
+def isabs(s): ...
+def join(a, *p): ...
+def split(p): ...
+def splitext(p): ...
+def splitdrive(p): ...
+def basename(p): ...
+def dirname(p): ...
+def islink(path): ...
+def lexists(path): ...
+def samefile(f1, f2): ...
+def sameopenfile(fp1, fp2): ...
+def samestat(s1, s2): ...
+def ismount(path): ...
+def walk(top, func, arg): ...
+def expanduser(path): ...
+def expandvars(path): ...
+def normpath(path): ...
+def abspath(path): ...
+def realpath(filename): ...
+
+supports_unicode_filenames = ... # type: Any
+
+def relpath(path, start=...): ...
+
+# posixpath imports these from genericpath.py:
+def commonprefix(list: List[AnyStr]) -> AnyStr: ...
+def exists(path: unicode) -> bool: ...
+def getatime(path: unicode) -> float: ...
+def getmtime(path: unicode) -> float: ...
+def getctime(path: unicode) -> float: ...
+def getsize(path: unicode) -> int: ...
+def isfile(path: unicode) -> bool: ...
+def isdir(path: unicode) -> bool: ...