glibc security and bug fix update

[2.3.4-2.57]

• Use malloc as needed in fnmatch (#769360)
  [2.3.4-2.56]
• Fix handling if newline in addmntent (#769360)
• Use correct type when casting d_tag (#769360).
• Properly quite output of local (#769360)
• Check size of pattern in wide character representation in fnmatch (#769360)
• Report write error in addmnt even for cached streams (#769360)
• ldd: Never run file directly (#769360).
• Check values from TZ file header (#767685)
• Workaround misconfigured system (#767685)
  [2.3.4-2.55]
• Require exact glibc version in nscd (#657009)