Use SDL 2.0.1-3742e768b536.

(MEGA_SDL2_VER is not used anymore, but keeping it up to date anyway).

CMakeLists.txt

@@ -136,7 +136,7 @@ set(MEGA_LIBOGG_VER "1.3.1")
 set(MEGA_LIBVORBIS_VER "1.3.3")
 set(MEGA_MPG123_VER "1.15.3")
 set(MEGA_FREETYPE_VER "2.5.0.1")
-set(MEGA_SDL2_VER "2.0.1-21dcb24404c0")
+set(MEGA_SDL2_VER "2.0.1-3742e768b536")
 set(MEGA_SDL2_IMAGE_VER "2.0.0")
 set(MEGA_OPENAL_VER "1.15.1-29e0af5ef052")
 set(MEGA_JASPER_VER "1.900.1")
@@ -180,7 +180,7 @@ set(MEGA_MPEG123 mpg123)
 add_subdirectory("libs/freetype-${MEGA_FREETYPE_VER}" ${CMAKE_BINARY_DIR}/freetype)
 set(MEGA_FREETYPE freetype-static)
 
-add_subdirectory("libs/SDL2-${MEGA_SDL2_VER}" ${CMAKE_BINARY_DIR}/SDL2)
+add_subdirectory("libs/SDL2" ${CMAKE_BINARY_DIR}/SDL2)
 set(MEGA_SDL2 SDL2)
 set(MEGA_SDL2MAIN SDL2main)