Fix link error with d_lib.cpp & mark as matching

src/d/d_main.cpp

@@ -58,7 +58,7 @@ static OSThread MAIN_THREAD;
 void main(int argc, char **argv) {
     u8 pStackBase[STACK_SIZE] __attribute__((aligned(32)));
 
-    dLib::unknownStub();
+    unknownStub();
     dMain::g_InitialTime = OSGetTime();
     dSystem::fixHeaps();
 

src/toBeSorted/d_lib.cpp

@@ -2,9 +2,12 @@
 
 #include <cstring>
 
-void dLib::unknownStub() {}
+u32 lbl_80574FA0;
+u32 lbl_80574FA4;
 
-bool dLib::strequals(const char *lhs, const char *rhs) {
+void unknownStub() {}
+
+bool strequals(const char *lhs, const char *rhs) {
     if (!rhs) {
         return false;
     }