Switched debian package name to sdl2

Disabled most of the dynamic shared libraries so that the correct dependency set is created for the runtime package.

debian/control

@@ -1,4 +1,4 @@
-Source: libsdl2
+Source: sdl2
 Priority: optional
 Section: libs
 Maintainer: Debian SDL packages maintainers <pkg-sdl-maintainers@lists.alioth.debian.org>
@@ -14,6 +14,7 @@ Build-Depends: debhelper (>= 9),
                libgl1-mesa-dev,
                libpulse-dev,
                libudev-dev [linux-any],
+               libdbus-1-dev [linux-any],
                libusb2-dev [kfreebsd-any],
                libusbhid-dev [kfreebsd-any],
                libx11-dev,
@@ -34,18 +35,8 @@ Architecture: any
 Pre-Depends: ${misc:Pre-Depends}
 Depends: ${misc:Depends},
          ${shlibs:Depends},
-         libasound2,
-         libpulse0,
          libudev0 [linux-any],
-         libx11-6,
-         libxcursor1,
-         libxext6,
-         libxi6,
-         libxinerama1,
-         libxrandr2,
-         libxss1,
-         libxt6,
-         libxxf86vm1
+         libdbus-1-3 [linux-any]
 Multi-Arch: same
 Conflicts: libsdl-1.3-0
 Replaces: libsdl-1.3-0