Bug 855536 - Add initExtendedSlot (r=njn,a=akeybl)
bug 851936 allow uninstall of providers, rollup of patch fixes in bug 858663 and bug 858868, a=akeybl
bug 858704 new provider preferences for aurora, pref off 3rd party install, r+a=gavin
Bug 853776, Part 1: Back out cset 6a0ed6484811 on Aurora because it uses an NSS feature that did not make the NSS release, r=honzab, a=bbajaj

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extra : rebase_source : 67057e7c3b54a7449824686ae30d7a9531388638
Bug 853776, Part 2: Remove the SEC_PKCS7VerifyDetachedSignatureAtTime patch to NSS and replace the code that called it with a stub tha always fails, r=honzab, a=bbajaj

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extra : rebase_source : 64508274251506620cbbc85d7d9a36781c676a62