no-sse2 patch FTBFS fix attempt, armv7hl FTBFS fix attempt
    
    - no-sse2 patch: First try at cleaning up the V8 x87 backend bitrot, by
                     porting needed changes from the ia32 SSE2 backend.
    
    - Reduce debugging info on ARM also on F27+ (as on F26- since 5.9.0).
    
    - Update changelog date.