Add FORCE argument to `delete-file'.

Add FORCE argument to `delete-file'.

* net/ange-ftp.el (ange-ftp-del-tmp-name): Make it a defun,
forcing to delete the temporary file.
(ange-ftp-delete-file): Add FORCE arg.
(ange-ftp-rename-remote-to-remote)
(ange-ftp-rename-local-to-remote, ange-ftp-rename-remote-to-local)
(ange-ftp-load, ange-ftp-compress, ange-ftp-uncompress): Force
file deletion.

* net/tramp-compat.el (tramp-compat-delete-file): New defun.

* net/tramp.el (tramp-handle-delete-file): Add FORCE arg.
(tramp-handle-make-symbolic-link, tramp-handle-load)
(tramp-do-copy-or-rename-file-via-buffer)
(tramp-do-copy-or-rename-file-directly)
(tramp-do-copy-or-rename-file-out-of-band)
(tramp-handle-process-file, tramp-handle-call-process-region)
(tramp-handle-shell-command, tramp-handle-file-local-copy)
(tramp-handle-insert-file-contents, tramp-handle-write-region)
(tramp-delete-temp-file-function): Use `tramp-compat-delete-file'.

* net/tramp-fish.el (tramp-fish-handle-delete-file): Add FORCE arg.
(tramp-fish-handle-make-symbolic-link)
(tramp-fish-handle-process-file): Use `tramp-compat-delete-file'.

* net/tramp-ftp.el (tramp-ftp-file-name-handler): Use
`tramp-compat-delete-file'.

* net/tramp-gvfs.el (tramp-gvfs-handle-delete-file): Add FORCE arg.
(tramp-gvfs-handle-write-region): Use `tramp-compat-delete-file'.

* net/tramp-imap.el (tramp-imap-handle-delete-file): Add FORCE arg.
(tramp-imap-do-copy-or-rename-file): Use `tramp-compat-delete-file'.

* net/tramp-smb.el (tramp-smb-handle-delete-file): Add FORCE arg.
(tramp-smb-handle-copy-file, tramp-smb-handle-file-local-copy)
(tramp-smb-handle-rename-file, tramp-smb-handle-write-region): Use
`tramp-compat-delete-file'.