Added code to ensure that bones have their flag set properly, even if they are not so in the original NIF file.
Added code to ensure that bones have their flag set properly, even if they are not so in the original NIF file.

neomonkeus/niflib,figment/niflib,figment/niflib,figment/niflib,niftools/niflib,amorilia/niflib,neomonkeus/niflib,niftools/niflib,neomonkeus/niflib,BlazesRus/niflib,niftools/niflib,amorilia/niflib,BlazesRus/niflib