One of the tests introduced for this bug was failing 
because of path size restriction in windows.
Moved the test case to a new test which is disabled under windows.

mysql-test/r/partition_not_embedded.result:
  updated test results after removing a test case.
mysql-test/r/partition_rename_longfilename.result:
  Test result for partition_rename_longfilename
mysql-test/t/partition_not_embedded.test:
  Removed the test case which tests renaming partition table such that
  the file name is 255 char long.
mysql-test/t/partition_rename_longfilename.test:
  Test case to test renaming partition table such that
  the file name is 255 char long.
  Moved from partition_no_embedded.