debian: fixed lintian errors and updated policy and compat levels

debian: fixed lintian errors and updated policy and compat levels

The following changes were made under debian/:

  * reviewed policy manual and updated Standards-Version to 3.9.1 (2012/03/03)
  * reviewed debhelper(7) manpage changes and updated compat to 7 (2012/03/03)
  * moved udev rules from /etc/udev/rules.d to /lib/udev/rules.d
  * changed backup and desktop menu icons to 32x32 XPM format
  * using >0 debian version number, since I'll probably be maintainer now
  * removed libosyncwrap.a and libosyncwrap.so from desktop package

The following changes were made under opensync-plugin/debian/:

  * Bumped compat to level 7 (2012/03/03)
  * Bumped Standards-Version to 3.9.1 (2012/03/03)
  * Using >0 debian version, since I'll probably be Debian maintainer now

The following changes were made under opensync-plugin-4x/debian/:

  * Bumped compat level to 7 (2012/03/03)
  * Bumped Standards-Version to 3.9.1 (2012/03/03)
  * Using >0 debian version, since I'll probably be Debian maintainer now
  * Fixed extended-description-line-too-long lintian warning