Rolled in changes from the latest KJS sources that support additional
	Number.prototype functions.

	Specifically this patch covers the follow parts of the ECMA 3 spec:
  	15.7.4.5, 15.7.4.6, and 15.7.4.7

	Fixes:
	<rdar://problem/3663716> missing Number.toFixed (and toPrecision, toExponential)
	<rdar://problem/3749492> missing Number.toPrecision prototype implementation
	<rdar://problem/3749591> missing Number.toExponential prototype implementation

        * kjs/identifier.h: Added toFixed, toPrecision, and toExponential to the
	list of supported identifiers (a macro).
        * kjs/number_object.cpp: Implemented support for toFixed(), toPrecision(),
	and toExponential().
        (NumberPrototypeImp::NumberPrototypeImp):
        (NumberProtoFuncImp::call):
        * kjs/number_object.h: Added property names for toFixed, toPrecision,
	and toExponential.
        (KJS::NumberProtoFuncImp::):
        * tests/mozilla/expected.html: Update results.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@7185 268f45cc-cd09-0410-ab3c-d52691b4dbfc