rotate attached images based on Exif orientation tag.
updated fr.po.
added 'Last 30 days' to the quick search menu.
updated po files.
distinguish icon for HTML mail and other mail with attachments on summaryview (#84).
disabled MIME_DEBUG.
src/textview.c: modified debug output.
implemented icon theme feature.
fixed filename (book.png -> stock_book.png).
makewin32.sh: added --with-themedir configure option.
updated hu.po.
made the rest of toolbar icons themeable.