Safari 5.1.4

# Contains improvements to stability, compatibility, and security, including changes that:
* Improve responsiveness when typing into the search field after changing network configurations or with an intermittent network connection
* Address an issue that could cause webpages to flash white when switching between Safari windows
* Address issues that prevented printing U.S. Postal Service shipping labels and embedded PDFs
* Preserve links in PDFs saved from webpages
* Fix an issue that could cause the screen to dim while watching HTML5 video
* Improve stability, compatibility and startup time when using extensions
* Allow cookies set during regular browsing to be available after using Private Browsing
* Fix an issue that could cause some data to be left behind after pressing the “Remove All Website Data” button