Merge branch 'master' into foreach

* master:
  reorder the branches
  ppid must be IS_STRING
  Use proper type
  The argument must be not changed in session_start
  Fixed annoying warnings
  Cleanup session id files after test
  Fixed Bug #68941 mod_files.sh is a bash-script
  Remove support for hex number from is_numeric_string
  add imap
  Update News
  Fixed bug #68901 (use after free)
  Remove legacy code
  Forgot to apply important peace of patch
  Fixed crash
  Fixed some annoying warnings
  Fix typo in doc
  Update UPGRADING and UPGRADING.INTERNALS
  Make session_decode return FALSE when it fails. Fix a test. Use proper types.
  WIP - test passes