FileZilla 3.3.3 RC1

# New features:

* Added "does not contain" filter condition to name and path filter types
* Pressing Alt+Left or Alt+Up (Cmd+Left, Cmd+Up on OS X) in file lists enters parent directory
* Pressing Alt+Down (Cmd+Down on OS X) in file lists transfers selected items
* Pressing Alt+Right (Cmd+Right on OS X) in file lists activates selected item(s)
* Add operating system information to about dialog
* MSW: Auto-update check now transmits whether the operating system is 32bit or 64bit
* Small performance improvements, mostly benefiting *nix users
* OS X: Remember hidden state of toolbar, make quickconnect bar look more Mac-ish
* Add option to display momentary transfer speed instead of average speed

# Bugfixes and minor changes:

* Fix problem with rekeying of SFTP connections if not permanently trusting the server's hostkey
* Certificate details dialog no longer changes size if selecting a different certificate in the chain
* Some dialogs did not display icons using the correct size
* Show "Not connected" instead of "Empty directory" in remote filelist statusbar if not connected
* MSW: Replace some additional characters not allowed in filenames on MSW
* MSW: Selecting files while holding Ctrl+Shift no longer shows incorrect values in the filelist status bars