Flashgot 0.9.9.3

小更新啊，没必要升级，不过有新版的就用新版吧

v 0.9.9.3
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+ linkbucks.com batch redirection support

v 0.9.9.2
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+ FlashGot.exe always returns 0 after auto-detection,
  thus preventing Wine from... whining.
x FlashGot.exe is digitally signed, for better
  anti-malware software peace of mind.

v 0.9.9.1
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+ Wine support can be disabled by setting the
  "flashgot.useWine" about:config preference to false.