convert: Fix debugging output when running multiple commands with xargs.

keyword: add verify to nokwcommands after refactor in e79a8f36c2a5 Add test as well. Thanks to Guy Brand for spotting this.

merge with crew-stable

Let the notify extension use [diff] options too.

coal/paper: fixed box via an expression for IE < 7

Fix intermittent broken pipe in test-highlight

ui: add an option to prompt for the username when it isn't provided When ui.askusername is set and not username are specified on the command line, in hgrc or in the variables $HGUSER or $EMAIL, then hg will prompt for the username. Feature requested, and documentation provided by Mark Edgington.