add (overwrite with) mypy stubs, if available

stdlib/3/posixpath.pyi

@@ -0,0 +1,46 @@
+# Stubs for os.path
+# Ron Murawski <ron@horizonchess.com>
+
+# based on http://docs.python.org/3.2/library/os.path.html
+
+from typing import Any, List, Tuple, IO
+
+# ----- os.path variables -----
+supports_unicode_filenames = False
+
+# ----- os.path function stubs -----
+def abspath(path: str) -> str: ...
+def basename(path) -> str: ...
+def commonprefix(list: List[str]) -> str: ...
+def dirname(path: str) -> str: ...
+def exists(path: str) -> bool: ...
+def lexists(path: str) -> bool: ...
+def expanduser(path: str) -> str: ...
+def expandvars(path: str) -> str: ...
+def getatime(path: str) -> int:
+    ... # return float if os.stat_float_times() returns True
+def getmtime(path: str) -> int:
+    ... # return float if os.stat_float_times() returns True
+def getctime(path: str) -> int:
+    ... # return float if os.stat_float_times() returns True
+def getsize(path: str) -> int: ...
+def isabs(path: str) -> bool: ...
+def isfile(path: str) -> bool: ...
+def isdir(path: str) -> bool: ...
+def islink(path: str) -> bool: ...
+def ismount(path: str) -> bool: ...
+def join(path: str, *paths: str) -> str: ...
+def normcase(path: str) -> str: ...
+def normpath(path: str) -> str: ...
+def realpath(path: str) -> str: ...
+def relpath(path: str, start: str = None) -> str: ...
+def samefile(path1: str, path2: str) -> bool: ...
+
+def sameopenfile(fp1: IO[Any], fp2: IO[Any]) -> bool: ...
+
+#def samestat(stat1: stat_result, stat2: stat_result) -> bool:
+#    ...  # Unix only
+def split(path: str) -> Tuple[str, str]: ...
+def splitdrive(path: str) -> Tuple[str, str]: ...
+def splitext(path: str) -> Tuple[str, str]: ...
+#def splitunc(path: str) -> Tuple[str, str] : ...  # Windows only, deprecated