Merge branch '2695_expansion_to_src'

Merge branch '2695_expansion_to_src'

* 2695_expansion_to_src: (51 commits)
  Fixed creation of lock files
  Changed function remove_encoding_from_path() for return vfs_path_t type
  fixup! Added tests for examine_cd() function.
  panels: Show archive name when entering to archive
  Fixed destination file name when file dialog with single operation is appear
  vfs_path: Fixed broken relative paths processing.
  Reimplemented list of operated files using GSList.
  Return values of following functions are constants now:
  Changed src/filemanager/file.c to handle vfs_path_t objects.
  Changed lot of functions in src/ directory
  Share same code between update_xterm_title_path() and midnight_get_title() functions
  Changes to handle vfs_path_t object:
  VFS: Added new function vfs_path_to_str_flags()
  Use vfs_path_t in execute.c and subshell.c.
  Changed do_cd() and do_panel() functions
  Added unit test for do_panel_cd() functions.
  Code refactoring: removed concat_dir_and_file() function.
  Code refactoring
  Changed internal viewer to use vfs_path_t objects.
  Changed internal editor to use vfs_path_t objects.
  ...