Windows: Always set the system timer resolution to 1ms by default.

An existing hint lets apps that don't need the timer resolution changed avoid
this, to save battery, etc, but this fixes several problems in timing, audio
callbacks not firing fast enough, etc.

Fixes Bugzilla #2944.

sdl2.pc.in

@@ -0,0 +1,15 @@
+# sdl pkg-config source file
+
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: sdl2
+Description: Simple DirectMedia Layer is a cross-platform multimedia library designed to provide low level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL, and 2D video framebuffer.
+Version: @SDL_VERSION@
+Requires:
+Conflicts:
+Libs: -L${libdir} @SDL_RLD_FLAGS@ @SDL_LIBS@
+Libs.private: @SDL_STATIC_LIBS@
+Cflags: -I${includedir}/SDL2 @SDL_CFLAGS@