FULLPIPE: Add 16bit/RGB backend support dependancy.
ALL: Remove support for MSVC8 and older

MSVC8 gives various compile error relating to templates that were changed
back in 2008, leading me to belive that no one is using it, and that there
is not point adding work arounds for a 9 year old compiler no one uses.
Merge pull request #469 from klusark/msvc8

ALL: Remove support for MSVC8 and older
SCUMM: Fix Indy3 AdLib door sfx. (See bug #6657)

Full name of the bug: "INDY3: Wrong sound when opening/closing doors (AdLib regression)".
DEVTOOLS: List MSVC 2013 support in create_project's help output.
BUILD: Theme files are in Windows executable.
SCUMM: Clear SFX channel when starting the SFX failed in AD player.
SCUMM: Don't allow SFX to reallocate their own channels in AD player.
SCUMM: Change channel/slot (re)allocation strategy in AD player.

This makes sure that always the channel/slot with the lowest priority is
reallocated in case none is free. This fixes some music oddities in Indy3.
SCUMM: Do not let music reallocate its own channels in AD player.

This makes it conform to the original.
GUI: Reduce spacing in save/load chooser in the classic theme.

This fixes bug #6658 "GUI: Save/Load grid view needs tuning for classic theme, 640x400 pixels" for me.
GRAPHICS: Added BE/LE to TS_ macros
FULLPIPE: MovGraph::calcMovItems: renamed variables and added some comments
FULLPIPE: Give better name to function
FULLPIPE: Remove unused variable
SWORD25: Fix sprite flipping
SCUMM: Add UK Windows version of Freddi Fish 3.
FULLPIPE: Fix selector in debug scene