GnGeo for MiyooCFW (revision "m2")

IMPROVEMENTS:

• restore biospath , country & system configuration\parameters options
• use generic paths via gmenu2x's parametrs (roms&bios dir is not hardcoded)

ISSUES:

• when using *.GNO format roms, you can't loadstate after new loadgame.

NOTES:

• provide neogeo.zip BIOS alongside your ROMset
• this is a compatible build, with static musl libs (works also on uclibc img)
• to install run this IPK pkg from latest gmenu2x's explorer (available in MiyooCFW 2.0)
• to see all changes go to the developer blog-posts on WHYCAN forum (see v20210731 release)