Reorganize library code into libs/ (#3119)

* Reorganize files into libs/{dolphin,JSystem,PowerPC_EABI_Support,revolution,TRK_MINNOW_DOLPHIN}

* Update configure.py and project.py for new libs structure

* Refactor `#include <dolphin/x.h>` -> `<x.h>`

* Remove `__REVOLUTION_SDK__` forwards from dolphin

* Fix dolphin/ references in revolution

* Wrap `#include <dolphin.h>` in `!__REVOLUTION_SDK__`

* Always build TRK against dolphin headers

* Resolve revolution SDK header resolution issues

include/NdevExi2A/DebuggerDriver.h

@@ -1,7 +1,7 @@
 #ifndef NDEVEXI2A_DEBUGGERDRIVER_H
 #define NDEVEXI2A_DEBUGGERDRIVER_H
 
-#include <dolphin/os.h>
+#include <os.h>
 #include "types.h"
 
 typedef void (*MtrCallback)(s32, OSContext*);