Thist patch is against:
branch: 3.2
revision: 5a210973c3105fef5ab6e9521e7d098de6f36127

This patch solves:
  * Modules/posixmodule.c:
     Relative symlink on windows was not considered.
  * Modules/posixmodule.c:
     Fixed memory leak and usage of GetFinalPathNameByHandle (#9927)
  * Lib/test/support.py:
     can_symlink() should not raise on XP or older.