add normalized overlays
Merge pull request #425 from hizzlekizzle/master

add normalized overlays
Check AXIS_BRAKE and AXIS_GAS if AXIS_LTRIGGER and AXIS_RTRIGGER return
0. The Moga Hero Power specifically uses AXIS_BRAKE and AXIS_GAS
instead.
Added an iCade profile for the Moga Hero Power controller, it might work
with other Moga controllers that have a HID mode.
Added to copyright headers.
make config directory require dynamic libraries for now. fixes issue #420
the way we implement chaning directories involves loading a dummy core, which we can't do on non-dynamic core platforms right now
Merge pull request #426 from AridRayne/moga

Moga
(iOS) Make the refresh button on the file browser work ‘better’. (It DID work before, by the time you restarted the app and browsed back to the directory the listing would be updated. This just makes it quicker.)
(iOS) Add support for extracting zip files in the file browser (long press on a .zip to get the option).

    The rationale here is that, on non-jailbroken devices, there is no way to upload a directory of files. If you wanted to upload data for a core that needs a set of files (e.g. prboom), the only option was to upload the files into the root of the Documents directory, then move each file into a sub-directory one at a time. With this addition a .zip file containing the grouped files can be uploaded then extracted, with sub-directories intact, via the file browser menu.
(iOS) Fix shameful logic error in unzip support
(iOS) Add air drop support for iOS 7. Only works with .zip files. Support for creating .zip files in the file browser will be added soon.
Add RETRO_ENVIRONMENT_GET_PERF_INTERFACE to libretro.h
Change RARCH_PERFORMANCE_ macro calls to RETRO_PERFORMANCE
(Libretro) Expose perf_log as callback too to libretro
(Libretro) Expose perf_register too
(Android) Build fix
(Libretro) Simplify RETRO_PERFORMANCE macros
Update libretro.h
(Libretro.h) Small cleanup
(libretro.h) Check first if PERFORMANCE_LOG_ callback functions point
to something before using them