core compilation notes.txt

ps1:
- file "frontend/libretro.c" line "snprintf(Config.Mcd2, sizeof(Config.Mcd2), "%s/%s", dir, CARD2_FILE);" to "snprintf(Config.Mcd2, sizeof(Config.Mcd2), "%s/../../%s", dir, CARD2_FILE);" to move the second memory card location two folders up.
- file "libpcsxcore/misc.c" line "memcpy(CdromLabel..." to "strncpy(CdromLabel..." in function "CheckCdRom()" to compile using devkitarm r45