GSdx-d3d: Add macro to support ScalingFactor in shaders.

GSdx-d3d: Partial port of the ICO HLE workaround.

We can't do a full port because channel shuffle and depth sampling need
to be ported to d3d but at the very least we can do a partial port that
skips the bad draw calls.
This way we can remove all the remaining crc hacks for ICO in GSHwHacks.

GSdx: Revert disabled crc hack on native res for SFEX3.

I forgot that it's not an upscaling issue.

GameDB: Add GIFFIFOHack to Mana Khemia 1 and 2.

SLUS-21735
SLUS-21890
Fixes flickering sprites.
Close #2645

GSdx-d3d: Move around some functions in DrawPrims to better match ogl.

IsOpaque(), EmulateChannelShuffle, dfmt check for 24bit alpha channel.

GSdx-gui: Change internal resolution drop down list names.

This should make things a bit easier for users when picking resolutions.

Native (PS2)
2x Native (~720p)
3x Native (~1080p)
4x Native (~1440p 2K)
5x Native (~1620p 3K)
6x Native (~2160p 4K)
8x Native (~2880p 5K)
Custom (Not Recommended)

Reenable the new saveslots. Disable the logging for them.

Revert "Saveslots: This version is still commented out, and somewhat broken at the moment. If you uncomment it, after loading a game, pause and then resume to force the save and load menus to update."

This reverts commit 49b91ea78f0dca007077d5390bef7e95f9d6e9cb.

pcsx2: small string typo fix.

GSdx: Change how crc hacks work on native res.

Change the code so that some crc hacks on some games that remove
ghosting/blur issues on upscaled resolutions are disabled on native
resolution if crc hack level is below Aggressive state (most of the time).
They aren't needed then so why don't we aim for better accuracy.

SPU2-X: Adjust NextA case comments a bit.

SPU2-X: Also include the registers from case 5 since it makes more sense to have both NextA writable.

Continuation from:

https://github.com/PCSX2/pcsx2/commit/6b22450a1bcaf2899ec6c1f14dde80b8b314bbca

SPU2-X: Fixes a regression with Wallace And Gromit: Curse Of The Were-Rabbit sound cutting off.

Follow up from PR #2315
Partially reverts commit:
https://github.com/PCSX2/pcsx2/commit/57cbc901b

PCSX2: Add tooltip warning for Widescreen Patches.

Close #1733

Dev9ghzdrk: Postinst for deb to add network capabilities

Saveslots: This version is still commented out, and somewhat broken at the moment. If you uncomment it, after loading a game, pause and then resume to force the save and load menus to update.

Add some logging for the saveslot changes, and the option to turn on just the extra ui update calls without the other saveslot changes, for testing.

A few more flags that slipped by the last commits.

Removing some warnings from GSdx and pcsx2 because gcc 8 spams them mercilessly. They should probably be fixed properly, but in the meantime, this'll prevent them from masking other compiler warnings.

PCSX2: update of Scandinavian translations