Issue #6975: os.path.realpath() now correctly resolves multiple nested symlinks on...

diff --cc Lib/posixpath.py
Simple merge

diff --cc Lib/test/test_posixpath.py
Simple merge

diff --cc Misc/NEWS
index 0e4f24c4a077cee9dfaccff089aea81312b2499a,0e0cd0fec1c729ad4131394fbe9ad2afd0f7f78a..d6930495358ce06a97ba28a80018992bbdc8a7ee
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -244,9 -172,9 +244,12 @@@ Core and Builtin
  Library
  -------
  
+ - Issue #6975: os.path.realpath() now correctly resolves multiple nested
+   symlinks on POSIX platforms.
+ 
 +- Issue #13773: sqlite3.connect() gets a new `uri` parameter to pass the
 +  filename as a URI, allowing to pass custom options.
 +
  - Issue #17156: pygettext.py now uses an encoding of source file and correctly
    writes and escapes non-ascii characters.