Reverting changes made to build systems when was upgrading OpenAL.

Reverting to openal from creative because own builds doesn't deal with 3D sound.
Hopefully it wouldn't lead to crashes caused by ffmpeg+openal (for resolving which
libraries were updated to openal-soft).

CMakeLists.txt

@@ -691,7 +691,7 @@ elseif(WIN32)
 	if(WITH_OPENAL)
 		set(OPENAL ${LIBDIR}/openal)
 		set(OPENAL_INCLUDE_DIR ${OPENAL}/include)
-		set(OPENAL_LIBRARY OpenAL32)
+		set(OPENAL_LIBRARY wrap_oal)
 		set(OPENAL_LIBPATH ${OPENAL}/lib)
 	endif()