Render blanks to spaces in index, fixes [298194...
Silently drop headers not in "key: value" forma...
Clear last search pattern if it's invalid. Clos...
Add Date: header to postponed messages
Only add Status: header (fcc/postpone) when sav...
Enforce 998 char length limit on header lines w...
Fixup atime for mbox/mmdf also when mailbox is ...
Don't mangle atime/mtime for mbox folders witho...