Bug 896213 Remove XPFE autocomplete interface usage from the XBL binding r=IanN

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extra : rebase_source : 0c02b7aeab290383761b4a38b002dbc01dc6379e
Bug 896768 Allow autocompletesearch="file" results to be styled r=Mossop

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extra : rebase_source : 1e710d9308c037c9037fe00e9360eb1ee0131408
Bug 896768 Test for autocompletesearch="file" results r=Mossop

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extra : rebase_source : e213d82c9703b1ddf5145768c2ef894260bfc155