Synced with ps2sdk, corrected some logic

[AKuHAK]

Pull Request checklist

Note: these are not necessarily requirements

• I reformatted the code with clang-format
• I checked to make sure my submission worked
• I am the author of submission or have permission from the original author
• Requires update of the PS2SDK
• Requires update of the gsKit
• Others (please specify below)

Pull Request description

I just was trying to unify some things - and make them as it is in mainstream ps2sdk. I also fixed some errors which capture modern toolchain. there are still many things to do but at least for now opl can be compiled on modern gcc.

[sp193]

These changes were back-ported from the PS2SDK and I see no problems with them.
Within these commits, some statements were changed to make GCC 4 and later happy, as some rules were changed, causing statements like these to be refused:

(unsigned int)ptr += count;

Although the logic was previously accepted and is working.

[ElPatas1]

@sp193, with this commit after update the PS2SDK no game works!
At least with the internal HDD all the games got a BSOD.

Best regards.

[AKuHAK]

Damn (( seems makefile changes crashed somewhere сб, 2 февр. 2019 г., 14:57 ElPatas1 <notifications@github.com>:

…

@sp193 <https://github.com/sp193>, with this commit after update the PS2SDK no game works! At least with the internal HDD all the games got a BSOD. Best regards. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#188 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAl8SLNnJ8aCS_2bhPnp3tpCiy_Z2O_Dks5vJYshgaJpZM4aaHno> .

[sp193]

I think the problem is with UDNL. I didn't realize that the pointers were not pointers to bytes, so the new code is not very compatible with the original logic.
I'll issue a patch soon.