Merge pull request #730 from lakkatv/lakka

(Lakka) Add callbacks to tweens, and fade the in menu when possible
(Lakka) Fix segfault
(PSP) Update platform_psp to use new argc/argv system
(XDK) Changed to new argc/argv system
Remove process_args where we can
(Android) Change platform_android.c to new argc/argv system
Change return type of process_args to void
(Menu) Take out log messages for load_menu_game
(Win32/Xbox) Performance counters were broken on Win32/Xbox before,
implement generic retro_perf_log implementation
(GX) Add performance counters for gx_video
(GX) Take out redundant GX_OPTS lines
(GX) Take out frame_resize perfcount
(PSP) Typo fix
skip setting of default path for overlay directory if HAVE_OVERLAY
not defined
(GX) Make gx_audio.c more backwards/forwards compatible
(PSP) add support for kernel-mode functions through a loadable module.
[GX] change usleep to timed cond wait in device thread
Merge pull request #731 from aliaspider/master

(PSP) add support for kernel-mode functions through a loadable module.
(PSP) Add HAVE_KERNEL_PRX ifdef
[GX] buildfix for salamander