Correctly detect haswell

```
I have a new Haswell Core i7-4770k processor. Here's what i7z says:
i7z DEBUG: Found Intel Processor
i7z DEBUG: Stepping 3
i7z DEBUG: Model c
i7z DEBUG: Family 6
i7z DEBUG: Processor Type 0
i7z DEBUG: Extended Model 3
i7z DEBUG: msr = Model Specific Register
i7z DEBUG: detected a newer model of ivy bridge processor
i7z DEBUG: my coder doesn't know about it, can you send the following info to
him?
i7z DEBUG: model c, extended model 3, proc_family 6

The first core of /proc/cpuinfo:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 60
model name : Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz
stepping : 3
microcode : 0x9
cpu MHz : 3501.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat
pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp
lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc
aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 fma
cx16 xtpr pdcm pcid sse4_1 sse4_2 movbe popcnt tsc_deadline_timer aes xsave avx
f16c rdrand lahf_lm abm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi
flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid
bogomips : 6996.27
clflush size : 64
cache_alignment : 64
address sizes : 39 bits physical, 48 bits virtual
power management:
```

Original issue reported on code.google.com by `andar...@gmail.com` on 6 Jun 2013 at 10:54

Start by reproducing the report using the supplied Intel Core i7-4770K and /proc/cpuinfo details, then trace the processor-detection entry point that currently identifies model 60 as Ivy Bridge. Done means Haswell is recognized correctly and the existing detection output no longer reports it as an unknown newer Ivy Bridge model.

Written by the indexing model from the issue text.