patchbomb: add --confirm option to show series details and ask for confirmation --confirm presents same prompt as --diffstat, but does not write a diffstat to the messages' bodies. A simple test simulating a negative response is included.

patchbomb: let diffstat prompt only once with complete summary This changes the behaviour of --diffstat. Before the user was asked for confirmation of each patch with its description and diffstat, and a final summary. Now there is only one prompt right before sending with a final summary which does not include the patch descriptions, but the message details and the diffstats: Final summary: From: sender To: recipient(s) Cc: (if present) Bcc: (if present) Reply-To: (if present) Subject: [patch 0 of x [flags]] intro (if present) a | 28 ++++++++++++++++++++++++++++ b | 15 +++++++++++++++ Subject: [patch 1 of x [flags]] subject a | 28 ++++++++++++++++++++++++++++ [ ... ] are you sure you want to send (yn)?

patchbomb: rename argument to avoid shadowing patch module