Bug 1098552 - Bookmarks.jsm should use case-insensitive keywords. r=Mano

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extra : rebase_source : 50db985a28194821d3e5e48d829e5af240ffdb31
extra : histedit_source : 8f26bfec9edbb82c4e1f5487c45583a563bb491f%2Cc41fba608e5de3958c8702adc5b779be30b0b0d7