Added code to patch the codehandler's MMIO address to the currently running system.  Added code to detect the location of where the code list should be.  This allows any Gecko code handler to be used.  Replace the codehandler.bin file with the code handler to be used (e.g. codehandleronly.bin).
Added code to patch the codehandler's MMIO address to the currently running system. Added code to detect the location of where the code list should be. This allows any Gecko code handler to be used. Replace the codehandler.bin file with the code handler to be used (e.g. codehandleronly.bin).
Merge pull request #955 from skidau/geckocodes-mmio

Added code to patch the codehandler's MMIO address