Upgrade to Selenium 2.11

v2.9.0
======

Project:
  * ThoughtWorks code grant to the Software Freedom Conservancy complete.

WebDriver:
  * Support for Ice Cream Sandwich in the AndroidDriver
  * CSS Selector support enabled for Android
  * Remote webdriver server log now contains '[HTML source]' instead of full
    source.
  * Better respect for preformatted text in WebElement.getText()
  * Adding better error message when failing to connect to the FirefoxDriver.
  * Reduced scrolling during tests for IE and Firefox.
  * Preserve the state of modified keys when using native events on Linux.
  * Support for experimental page load detection in firefox. Set the
    "webdriver.load.strategy" to "fast" in the FirefoxProfile to enable less
    conservative page loading detection at the risk of greater test
    instability.
  * FIXED: 2031: Shielding backslashes when writing preferences to a file.
    There is an issue with Firefox: it drops \n and \r when it moves user
    preferences to prefs.js. This patch is a workaround.
  * FIXED: 2223: Clicks on labels are now propagated to the referenced element.
  * FIXED: 2646: PortProber no longer attempts to divide by zero.
  * FIXED: 2675: Better detection of where to click on links.

RC:
  * FIXED: 569: Making assert and verify methods NPE-safe.