realpath is implemented as a syscall. This is not really required but it
was the easiest way to get it working as there is already path
canonicalization at kernel level.
crt files for userspace are now a dependency of libc, which means that
everytime libc gets installed, crt files will also install.
This fixes the problem when building libc
Now files are installed using the install() command instead of manually
copying files to their destinations. This allows automatic recompilation
of headers that did not work previously
Bananymous