[PATCH] ARM: Windows on ARM Hazard recognition support

[Saleem Abdulrasool]

I think everyone agrees that this is not a particularly pretty solution.  Given that any case of the bundle being split up should be considered a bug, I think that there is no reason to hold up other changes on this.  This addresses all but one case: the constant island pass.  I've committed a change with the bundling approach with a bit more aggressive reorder prevention.  The constant island handling will have to be addressed separately and we can discuss how to best handle that separately.

http://reviews.llvm.org/D3254