ELFLoader works inside the kernel!

We load /_hello.o which just prints out a simple message.
It executes inside the kernel itself, so no fancy userspace process
or anything, but this is still so cool!

Kernel/_hello.cpp

@@ -0,0 +1,7 @@
+extern "C" int puts(const char*);
+
+extern "C" int elf_entry()
+{
+    puts("Home, where you are supposed to be...");
+    return 0;
+}