nvram boot-nonce patch, more elegant offset loading

[arx8x]

pls read, senpai

• changes the button to say 'go', since we're not just running the sploit anymore
• use sysctl calls to get hw identifier and current build id
• organized device, build id blocks to add offset for every possible device that has 10.3 - 10.3.3(more will be added in the next commit)
• log test offset, device identifier, build id, kern version to console so that you can actually check if it loads the offset
• fixed a condition check in offset loading
• changed some return values and comparisons to match C standards
• removed comparisons using Foundation objects for identifying device + buildid combinations (replaced with C string for consistency. We're now using NSObjects only in viewController stuff)

Patches the nvram variable 'com.apple.System.boot-nonce' to enable users to set generator.
note : this has to be done as part of the exploit as we have both kernel task and kernel base address. Getting these in a different tool is not that easy. Requires getting tfp0 and kernel base address. We will be compelled to do this in future.

Accept this one after you accept #10

[PsychoTea]

I assume you have verified everything to work correctly, without any issues? :)

[arx8x]

On an iPhone 6s 10.3.2, yes. Remounting / failed because it lacked the offset. iPhone 7 should succeed if it did before. Try though

[talanov]

@PsychoTea don't forget to merge #10 first 👍
Here everything works OK.

[talanov]

@PsychoTea
There's not much tbd to remove conflicts.
I guess, only conflicts to dismiss for you are in storyboard.