PS2: Pull request to branch 1.6.0 for latest PS2 code

[sunmax]

Hi there Team,

here comes the latest & greatest PS2 ScummVM ;-)

Changelog:

• fixed all stack issues (now PS2 build is cleanly gdb- & gprof-friendly)
• added [PlayStation2] section to scummvm.ini
• configurable: TV standard, gfx resolution, hdd partition
• modular driver loading (you can disable unused ones in [PlayStation2]
• support for latest PS2 SDK on github
• dynamic plugins enabled by default
• improved "configure" support
• code cleanup and sane casting
• see log for all changes ;-)

Please note, that we now default to latest SDK, so we'll need that for Buildbot too or daily build will fail.

You can select old SDK by undef NEW_PS2SDK

Let me know if you have any questions or suggestions.

Thanks,
-max

[sev-]

Merging for the sake of debugging convenience and completeness.

[digitall]

@sev- : I think the Pull Requests for PS2 against the older release branches are due to a suggestion of mine. I said that it would be useful for porters who miss releases to "fill in" the missing releases later on.

This means that users who report a regression bug can do a "gross bisection" of the older releases without saying .e.g. "Well, it worked in v1.4.1, and it is now broken in v1.6.0 .... pity we don't have any releases between, must have got broken somewhere in there" :/

This is especially important for embedded type builds with tricky toolchains to bring up as finding a user with the hardware, the game, the technical capability to do a build and bisection and inclination is thus pretty difficult...

At least with the releases filled in, we get a better "Oh, it was between v1.4.1 and v1.5.0"... which is much narrower range to search.