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/d/d_path.h

@@ -1,8 +1,8 @@
 #ifndef D_D_PATH_H
 #define D_D_PATH_H
 
-#include <dolphin/types.h>
-#include <dolphin/mtx.h>
+#include <types.h>
+#include <mtx.h>
 
 class cBgS_PolyInfo;
 struct cXyz;