Moved Opacity logic from ImageComponent to GuiComponent so any extender
of GuiComponent che implement its opacity logic.
Implemented Opacity logic for TextComponent (now text can have fade
animation)
You can now map the functions "sortordernext" and "sortorderprevious" to
inputs (in es_input.cfg) and toggle the game list sort order with them.
The order is: "file name, ascending" (default), "file name, descending",
"rating ascending", "rating descending", "user rating ascending", "user
rating descending", "time played ascending", "times played descending",
"last played time ascending", "last played time descending".
The ResourceManager provides a unified interface for accessing resource
data, embedded or from the filesystem, with
initialization/deinitialization handled automatically behind the scenes.
It also keeps from creating duplicate resources (e.g. when two
ImageComponents use the same image file).
Audio still needs to be moved over to it.
Reworked GuiGameList to use a TextComponent for description.
Changed set/clearClipRect to push/popClipRect.
Fixed Y coordinate in the clip rect functions.
Sorta fixed AnimationComponent being totally out of whack with VSync off.
Fixed AudioManager/InputManager unsigned vs signed comparison warnings.
Fixed a FolderData sorting crash (I can't believe nobody's reported
this).
Fixed a GuiTheme crash for empty paths.
Added the %ROM_RAW% tag, for the unescaped ROM name - useful for higan
on windows.
SystemData will now add folders that end in EXTENSION as GameDatas, and
not recurse through them. Also useful for higan.
Add volume control int Windows through the mixer API (until XP) and the
EndpointVolume API (Vista and above). Add volume control in Linux
through ALSA.
Convert AudioManager to use shared_ptrs.
SDL_mixer is not in the standard SDL distribution. The mixing is now
done using regular SDL_Audio functions. AudioManager is converted to a
singleton and std::shared_ptrs are used for all Sound objects. Note that
for GCC "-std=c++11" might need to be added to the CMAKE_CXX_FLAGS.
