Bug 724533 - Enable use of ICU headers.  r=glandium

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extra : rebase_source : fc21b6ca249d7184918e59f84983d29f405ededa
Bug 837957 - Implement ICU dependent functions of Intl.Collator, Intl.NumberFormat, Intl.DateTimeFormat (ICU stubs). r=jwalden

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extra : rebase_source : 85f45e08558ee989397d5c02af6bc141b6741db4