(PSP) add new resampler parameters to resampler_CC_init.
Get rid of MODE_MENU_HD too -g_extern.lifecycle_state can now
be used for 'injecting' button presses (i.e. libretro button presses
and/or meta button presses)
initialize frame_cache and texture_frame to a dummy frame in
init_video_input() to avoid undefined behavior in the init phase in case
they are used before being set.
Merge pull request #1079 from aliaspider/master

fix PSP build.
(RARCH_CONSOLE) Prevent exit_spawn from being set to true whenever
we start new content
Move flush_audio to libretro_version_1.c as static function
(rarch_main_command) Inline set_fullscreen function into RARCH_CMD_REINIT
Add RARCH_CMD_SHADER_DIR_INIT/RARCH_CMD_SHADER_DIR_DEINIT
Move rarch_check_block_hotkey to input/input_common.c and make
the function static
Refactor meta_input_keys_pressed
Turn more functions into static
Merge pull request #1080 from mprobinson/joypad-driver

Fix joypad driver setting
menu_environment_get - only set libretro core if g_extern.has_set_libretro
is false
Expand rarch_main_command
Add RARCH_CMD_REWIND_DEINIT/RARCH_CMD_REWIND_INIT/RARCH_CMD_REWIND_TOGGLE
Move more stuff to rarch_main_command
Cleanups
Have more initing/deiniting go through rarch_main_command
Add more commands to rarch_main_command
RARCH_CMD_RECORD_INIT - call rarch_main_command(RARCH_CMD_RECORD_DEINIT)
for safety precautions