Merge with crew

fetch: don't proceed if working directory is missing files (issue988)

fetch: rename --force-editor option to --edit, for consistency

dates: fix fractional timezone display rounding bug

churn: show comitter email addresses unclipped (bug 1023) Email addresses were being clipped at a hard-coded 20 chars. Measure the length of all email addresses and accommodate the longest.

gitweb: use {url} as entrypoint in notfound.tmpl instead of /

Support web.baseurl in hgwebdir, overriding SCRIPT_NAME

Fixed typo in tag help, found by John Coomes

hgweb: fix test results missed by 6218:345a23eca8f6

gitweb: remove some line breaks in archive and rss columns. Clean up archive formatting a little in the index page.