Fixes #2022, do not resume on Android when surfaceChanged

If the app is in landscape mode and the user presses the power button, a pause
is followed immediately by a surfaceChanged event because the lock screen
is shown in portrait mode. This triggers a "false" resume.
So, we just pause and resume following the onWindowFocusChanged events.

Also, wait for SDL_APP_WILLENTERBACKGROUND and SDL_APP_DIDENTERBACKGROUND before
blocking the event pump.

Xcode/SDL/Info-Framework.plist

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundleGetInfoString</key>
+	<string>http://www.libsdl.org</string>
+	<key>CFBundleIconFile</key>
+	<string></string>
+	<key>CFBundleIdentifier</key>
+	<string>org.libsdl.SDL2</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>Simple DirectMedia Layer</string>
+	<key>CFBundlePackageType</key>
+	<string>FMWK</string>
+	<key>CFBundleShortVersionString</key>
+	<string>2.0.0</string>
+	<key>CFBundleSignature</key>
+	<string>SDLX</string>
+	<key>CFBundleVersion</key>
+	<string>2.0.0</string>
+    <key>CFBundleExecutable</key>
+    <string>${EXECUTABLE_NAME}</string>
+</dict>
+</plist>

Xcode/SDL/pkg-support/SDL.info

@@ -0,0 +1,15 @@
+Title SDL 2.0.0
+Version 1
+Description SDL Library for Mac OS X (http://www.libsdl.org)
+DefaultLocation /Library/Frameworks
+Diskname (null)
+DeleteWarning 
+NeedsAuthorization NO
+DisableStop NO
+UseUserMask NO
+Application NO
+Relocatable YES
+Required NO
+InstallOnly NO
+RequiresReboot NO
+InstallFat NO

Xcode/SDL/pkg-support/codesign-frameworks.sh

@@ -0,0 +1,43 @@
+#!/bin/sh
+
+# WARNING: You may have to run Clean in Xcode after changing CODE_SIGN_IDENTITY! 
+
+# Verify that $CODE_SIGN_IDENTITY is set
+if [ -z "$CODE_SIGN_IDENTITY" ] ; then
+    echo "CODE_SIGN_IDENTITY needs to be non-empty for codesigning frameworks!"
+
+    if [ "$CONFIGURATION" = "Release" ] ; then
+        exit 1
+    else
+        # Codesigning is optional for non-release builds.
+        exit 0
+    fi
+fi
+
+SAVEIFS=$IFS
+IFS=$(echo -en "\n\b")
+
+FRAMEWORK_DIR="${TARGET_BUILD_DIR}"
+
+# Loop through all frameworks
+FRAMEWORKS=`find "${FRAMEWORK_DIR}" -type d -name "*.framework" | sed -e "s/\(.*\)/\1\/Versions\/A\//"`
+RESULT=$?
+if [[ $RESULT != 0 ]] ; then
+    exit 1
+fi
+
+echo "Found:"
+echo "${FRAMEWORKS}"
+
+for FRAMEWORK in $FRAMEWORKS;
+do
+    echo "Signing '${FRAMEWORK}'"
+    `codesign -f -v -s "${CODE_SIGN_IDENTITY}" "${FRAMEWORK}"`
+    RESULT=$?
+    if [[ $RESULT != 0 ]] ; then
+        exit 1
+    fi
+done
+
+# restore $IFS
+IFS=$SAVEIFS

Xcode/SDL/pkg-support/resources/License.txt

@@ -0,0 +1,19 @@
+
+Simple DirectMedia Layer
+Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
+  
+This software is provided 'as-is', without any express or implied
+warranty.  In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+  
+1. The origin of this software must not be misrepresented; you must not
+   claim that you wrote the original software. If you use this software
+   in a product, an acknowledgment in the product documentation would be
+   appreciated but is not required. 
+2. Altered source versions must be plainly marked as such, and must not be
+   misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.

Xcode/SDL/pkg-support/resources/ReadMe.txt

@@ -0,0 +1,32 @@
+The Simple DirectMedia Layer (SDL for short) is a cross-platform 
+library designed to make it easy to write multi-media software, 
+such as games and emulators.
+
+The Simple DirectMedia Layer library source code is available from: 
+http://www.libsdl.org/
+
+This library is distributed under the terms of the zlib license: 
+http://zlib.net/zlib_license.html
+
+
+This packages contains the SDL framework for OS X. 
+Conforming with Apple guidelines, this framework 
+contains both the SDL runtime component and development header files.
+
+
+To Install:
+Copy the SDL2.framework to /Library/Frameworks
+
+You may alternatively install it in <Your home directory>/Library/Frameworks 
+if your access privileges are not high enough. 
+
+
+Additional References:
+
+ - Screencast tutorials for getting started with OpenSceneGraph/Mac OS X are 
+ 	available at:
+	http://www.openscenegraph.org/projects/osg/wiki/Support/Tutorials/MacOSXTips
+	Though these are OpenSceneGraph centric, the same exact concepts apply to 
+	SDL, thus the videos are recommended for everybody getting started with
+	developing on Mac OS X. (You can skim over the PlugIns stuff since SDL
+	doesn't have any PlugIns to worry about.)