Updated SDL2 to the latest Mercurial revision.

libs/SDL2/.hgignore

@@ -8,6 +8,7 @@ Makefile
 sdl-config
 SDL2.spec
 build
+Build
 
 # for Xcode
 *.orig
@@ -17,20 +18,12 @@ build
 *~
 *.o
 *.mode1*
-*.model*
-*.perspective*
 *.perspective*
 *.pbxuser
 (^|/)build($|/)
 .DS_Store
-Xcode/SDL/SDL.xcodeproj/xcuserdata
-Xcode/SDL/SDL.xcodeproj/project.xcworkspace
-Xcode/SDLTest/SDLTest.xcodeproj/xcuserdata
-Xcode/SDLTest/SDLTest.xcodeproj/project.xcworkspace
-Xcode-iOS/SDL/SDL.xcodeproj/xcuserdata
-Xcode-iOS/SDL/SDL.xcodeproj/project.xcworkspace
-Xcode-iOS/Demos/Demos.xcodeproj/xcuserdata
-Xcode-iOS/Demos/Demos.xcodeproj/project.xcworkspace
+xcuserdata
+*.xcworkspace
 
 # for Visual C++
 Debug
@@ -72,20 +65,26 @@ test/config.status
 test/Makefile
 test/SDL2.dll
 test/checkkeys
+test/controllermap
 test/loopwave
 test/loopwavequeue
 test/testatomic
+test/testaudiohotplug
 test/testaudioinfo
 test/testautomation
 test/testdraw2
+test/testdrawchessboard
+test/testdropfile
 test/testerror
 test/testfile
 test/testgamecontroller
 test/testgesture
 test/testgl2
 test/testgles
+test/testgles2
 test/testhaptic
 test/testhittesting
+test/testhotplug
 test/testiconv
 test/testime
 test/testintersections
@@ -115,8 +114,10 @@ test/teststreaming
 test/testthread
 test/testtimer
 test/testver
+test/testviewport
 test/testwm2
 test/torturethread
+test/testdisplayinfo
 test/*.exe
 test/*.dSYM
 buildbot