The bootloader now shows an error message instead of hanging with
a black screen on incompatible CPUs.

Add the two additional (but set to NULL) kernel args.

See merge request !4

Support booting from MBR disks

See merge request !3

Cleanup print functions
Reformat kernel arguments

Removed PIT code

* Fire up multiple processors

* Use IPIs to wake up secondary processors

* Much better exception information

* Modifications to show more information on fault

* WIP: Use real libstd

* Add TLS (not complete)

* Add random function, export getpid, cleanup

* Do not spin APs until new context

* Update rust

* Update rust

* Use rd/wrfsbase

* Implement TLS

* Implement compiler builtins and update rust

* Update rust

* Back to Redox libstd

* Update rust