Bug 890690 - Add postDataString property to nsISearchSubmission. r=gavin

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extra : transplant_source : %F8%86%BD%9A%0Bt%95%F8%DC%E5%FA%BD%C8%3BP%87%A1%CB/%95
Bug 890690 - Support POST searches in about:home. r=gavin

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extra : transplant_source : %A5%23%F7%EC%87%DC%ED%D3V%00%C1%D7K%90%D4%009Pp%24
Bug 890690: added unit test for POST search engines in about:home, r=gavin

--HG--
extra : transplant_source : %B0%16%95/%08%1B5%A4%BC%B9U%F4x%D5%92%BED%B3%CC%AF