5 1 new backport x11 fs rework (#1485)

* Use XRandR 1.2 to set fullscreen resolution for single output

Squash of roothorick's PR #497
(also includes Kyzentun's CMake changes from PR #716)

* Cherry-pick json c++1x stuff (b9e3d7174e)

* Cherry-pick c++11 support from 5bba5c0038 and 9f8b045309

* rework Linux (X11) fullscreen, improve display-related Graphics Options

Implement option to select between monitors for exclusive fullscreen mode
on X11 (using XRandR 1.2), or use a fullscreen borderless window.

Reimplement resolution/refresh rate/display mode-related option rows
using Lua, update choices dynamically so only known-good groupings of
resolution/refresh rate/aspect ratio can be selected.

Minimally update Windows/MacOS LowLevelWindow implementations to support
changes made for Linux side. Fullscreen Borderless Window/multi monitor
support from X11 not implemented for those in this commit.

* allow forcibly disabling xinerama use on Linux

When libXinerama is available, SM tries to use it to find the proper
monitor indexes to use to set _NET_WM_FULLSCREEN_MONITORS (on borderless
fullscreen). xfwm4 seems to assume that monitors are numbered in increasing
order from left to right (rather than using the Xinerama-assigned numbers),
so _NET_WM_FULLSCREEN_MONITORS misbehaves on Xfce.

This commit bypasses use of libXinerama, and instead forces SM to induce fullscreen
on the desired monitor in the backup, hacky way: remove all window hints, move window
to desired monitor, then add _NET_WM_STATE_FULLSCREEN hint. This works on
mutter and Xfce.

* Remove multiple warnings on redundant define.

This used to be hard-coded due to pthread related items, but now it's dynamically determined.

* fix _fallback menu behavior for unrecognized aspect ratios

* Fix error recreating existing FS texture

* Bump deployment target to 10.7 to use libc++ on XCode 8

* Add explicit casts to please clang

* Update changelog

src/ScreenOptionsMasterPrefs.h

@@ -1,14 +1,24 @@
 #ifndef SCREEN_OPTIONS_MASTER_PREFS_H
 #define SCREEN_OPTIONS_MASTER_PREFS_H
 
+#include "EnumHelper.h"
+
 static const int MAX_OPTIONS=16;
-#define OPT_SAVE_PREFERENCES			(1<<0)
-#define OPT_APPLY_GRAPHICS				(1<<1)
-#define OPT_APPLY_THEME					(1<<2)
-#define OPT_CHANGE_GAME					(1<<3)
-#define OPT_APPLY_SOUND					(1<<4)
-#define OPT_APPLY_SONG					(1<<5)
-#define OPT_APPLY_ASPECT_RATIO			(1<<6)
+enum OptEffect
+{
+	OPT_SAVE_PREFERENCES		=	(1<<0),
+	OPT_APPLY_GRAPHICS			=	(1<<1),
+	OPT_APPLY_THEME				=	(1<<2),
+	OPT_CHANGE_GAME				=	(1<<3),
+	OPT_APPLY_SOUND				=	(1<<4),
+	OPT_APPLY_SONG				=	(1<<5),
+	OPT_APPLY_ASPECT_RATIO		=	(1<<6),
+	NUM_OptEffect				=	7,
+	OptEffect_Invalid			=	MAX_OPTIONS+1
+};
+const RString& OptEffectToString( OptEffect e );
+OptEffect StringToOptEffect( const std::string &e );
+LuaDeclareType( OptEffect );
 
 struct ConfOption
 {