Strategy to find the boot.dol from "USB Loader GX":
1. looking for "/config/GXGlobal.cfg" first on "SD:/" and then on "USB:/"
2.1. when cfg is found and update_path is set, then searches for "boot.dol"/"boot.elf" in "update_path"
2.2. when cfg isn't found or update_path isn't set, then looking for "boot.dol"/"boot.elf" in "apps/usbloader_gx/" first on "SD:/" and then on "USB:/"
3. if the Loader is found, then LOAD and RUN it. Otherwise exits the for-warder
Primarily searched on SD-Card. This makes easier to test new versions.
*Fixed one bug that you couldnt get to FormatMenu
*Added USB functions, not yet implemented (they dont work under cIOS249/cIOS222, only under IOS36 (original). right now function only works if partition 1 is fat/fat32)
