Several fixes and improvements do NGC and Wii (#13698)
* Support new elf2dol path in Makefile.griffin
* Fix NULL pointer dereference when no core info is available
* Fix double include of different versions of libogc
* Move ngc and wii to Makefile.common
Resulting binary is 60K *smaller*. This is surprising but probably due to
less inlining happening
* gx_gfx: Fix hang on gfx initialization
* Remove sthread_isself on NGC/Wii
It relies on pthread_equal that is not there for either legacy pthreads
or normal pthreads on those platforms
* Wii networking
* Missing includes in split
* Network fixes
* Fix logging of non-format string as a format
* Support for gx netlogger
* Network fix
* Network fixes
* Network info
* gx: Move config files to app directory
Otherwise it clashes between wiiU and vWii version with unpredictable
effects
