Adds --config-dir option in configure script to let the user set a custom path for system wide config file
Fixes issues pointed by Themaister

configure option is now --global-config-dir
update iOS build script

1. Provides for better support of passing in the NOCODESIGN env var to
NOT codesign the build
2. Will once again codesign all of the dylibs in the modules directory
(wildcard paths passed to codesign broke in some update to Xcode)
updates to the README to reflect the new build script at libretro/libretro-super
Merge pull request #211 from maddox/updated-ios-build-script

Updated iOS build script
Merge pull request #210 from sbooob/build-option-config-dir

--config-dir option in configure script
Remove binary from repo.
Style nits.
Fix derp.
(iOS) Naming - change 'Emulators' to 'Cores'
(iOS) Add more modules
(iOS) Rename display_names for PS1 cores
(iOS) Rename module display_name of mednafen_psx_libretro.info
(PS3) Fixes 'Return To Multiman' option
Small inconsequential tweaks