Adds support for a self-contained portable mode in which the
executable's directory is used for application files instead
of directories in the user's profile.
Portable mode is activated by placing a scummvm.ini file in
the executable's directory. The directory must be outside of
the system's Program Files directory to comply with UAC.
The OSystem_SDL::getDefaultGraphicsMode was returning the
default for the current graphics manager and not the default
for the OSystem_SDL instance. So for example if the default
is SDL Surface when starting ScummVM with the gfx_mode not
set in the config file, and then the user selects the OpenGL
graphics mode, getDefaultGraphicsMode() would now return the
OpenGL mode (the default the OpenGLGraphicsManager). As a
result changing the graphics mode back to <default> and
applying the change would not switch back to Surface SDL
until you restart ScummVM or start a game.
This commit also change how the SDL backends can specify which
graphics mode to use by default. They no longer have to assume
they know the names of the graphics modes in the graphics manager.
Different platforms have different levels of support of encodings and
often have slight variations. We already have tables for most encoding
with only CJK missing. Full transcoding inclusion allows us to get reliable
encoding results independently of platform. The biggest con is the need for
external tables encoding.dat.
It removes a duplicate table for korean in graphics/korfont.cpp
We bypass SDL_WM_SetIcon and setup the window icon using the embedded icon, with the default path as a fallback.
This allows us to use an antialised icon with alpha transparency (which the default included icon doesn't have) on Windows XP and later
This embeds all the engine data files from dists/engine-data into the
executable in case the engines using them are included statically.
Furthermore it includes the theme dist files in the executable.
