Simple ELF program loader

Now any initrd file is treated like a program image and passed to the
loader to load as a process. Very rudimentary elf loading just allocates
pages, copies sections, and sets the ELF's entrypoint as the RIP to
iretq to.

src/libraries/elf/wscript

@@ -0,0 +1,14 @@
+
+def configure(ctx):
+    pass
+
+def build(bld):
+    sources = bld.path.ant_glob("**/*.cpp")
+
+    bld.stlib(
+        source = sources,
+        name = 'elf',
+        target = 'elf',
+    )
+
+# vim: ft=python et