#4 uselessly linked against Xt, Xmu, Xext

[Paul Wise]

When building the Debian package, I get these three warnings about xgalaga being linked against 3 libraries that it does not use:

dpkg-shlibdeps: warning: dependency on libXt.so.6 could be avoided if "debian/xgalaga/usr/games/xgalaga debian/xgalaga/usr/games/xgalaga-hyperspace" were not uselessly linked against it (they use none of its symbols).
dpkg-shlibdeps: warning: dependency on libXmu.so.6 could be avoided if "debian/xgalaga/usr/games/xgalaga debian/xgalaga/usr/games/xgalaga-hyperspace" were not uselessly linked against it (they use none of its symbols).
dpkg-shlibdeps: warning: dependency on libXext.so.6 could be avoided if "debian/xgalaga/usr/games/xgalaga debian/xgalaga/usr/games/xgalaga-hyperspace" were not uselessly linked against it (they use none of its symbols).