Switch to dh from cdbs, multiarchify, update debian/control

debian/control

@@ -2,13 +2,14 @@ Source: libg15
 Section: libs
 Priority: optional
 Maintainer: Giacomo Catenazzi <cate@debian.org>
-Build-Depends: cdbs, debhelper (>= 5), autotools-dev, dh-autoreconf, libusb-dev
 Standards-Version: 3.8.3
-Homepage: http://www.g15tools.com/
+Build-Depends: debhelper (>=12), libusb-dev
+Homepage: https://sourceforge.net/projects/g15tools/
 
 Package: libg15-1
 Section: libs
 Architecture: any
+Multi-Arch: same
 Depends: ${shlibs:Depends}, ${misc:Depends}
 Description: Library for interfacing with the Logitech G15 keyboards
  libg15 provides an API for low level control of the LCD display and
@@ -20,6 +21,7 @@ Package: libg15-dev
 Section: libdevel
 Depends: libg15-1 (= ${binary:Version}), ${misc:Depends}
 Architecture: any
+Multi-Arch: same
 Description: Library for interfacing with the Logitech G15 keyboards
  libg15 provides an API for low level control of the LCD display and
  the extra keys on some Logitech keyboards (G11, G15).