LibC: Add stubs for some functions in {dlfcn,ftw,utime,wchar}.h

userspace/libraries/LibC/ftw.cpp

@@ -0,0 +1,13 @@
+#include <BAN/Assert.h>
+
+#include <ftw.h>
+
+int ftw(const char*, int (*)(const char*, const struct stat*, int), int)
+{
+	ASSERT_NOT_REACHED();
+}
+
+int nftw(const char*, int (*)(const char*, const struct stat*, int, struct FTW*), int, int)
+{
+	ASSERT_NOT_REACHED();
+}