Update packaging

* New maintainer.
 * Switch to debhelper.
 * Remove d/watch file pointing to a dead site.
 * Don't install .la files.
 * Multiarchify.
 * Remove unneeded dependencies (closes: bug#810434).

debian/libg15render1.install

@@ -1,2 +1,2 @@
-debian/tmp/usr/lib/lib*.so.* usr/lib/
-debian/tmp/usr/share/g15tools/fonts/G15/* usr/share/g15tools/fonts/G15/
+debian/tmp/usr/lib/*/lib*.so.*
+debian/tmp/usr/share/g15tools/fonts/G15/*