move memset to memutil

use string identifiers for events ...

(some rework of the string saving system was required)

use stringmap for communication between processes

add stringmap insert and read length functions

enable freeing of memory

use registers for passing data to system calls

add the ability to create multiple services and repair inter-service communication

organize services and their providers

enter usermode for user processes and start with some memory protection

read elf data into a new page table

read the initrd file to get the memory location of the first userspace program

find the initrd in the multiboot 2 information structure

add basic kernel page management

initial commit