Bug 940765 - preference service can GC, r=terrence

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rename : layout/reftests/w3c-css/submitted/flexbox/flexbox-align-self-baseline-horiz-3-ref.xhtml => layout/reftests/w3c-css/submitted/flexbox/flexbox-align-self-baseline-horiz-1-ref.xhtml
rename : layout/reftests/w3c-css/submitted/flexbox/flexbox-align-self-baseline-horiz-3.xhtml => layout/reftests/w3c-css/submitted/flexbox/flexbox-align-self-baseline-horiz-1.xhtml
extra : rebase_source : cad260c0819a3ced47e1ec612de2788e1e991670
Bug 948646 - AutoJSContext cannot GC, r=terrence

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extra : rebase_source : f015f6bce00faa2c8e77cb861ed0770710e718ed
Bug 948753 - Annotate sane nsISupports virtual methods, r=bhackett

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extra : rebase_source : 85695549d5d068bd393fc50e7190da00f95970ca
No bug. Remove noisy debugging printout.

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extra : rebase_source : f5aa45dcb6c5d051f8888682d3aeab71b7df56d5