sysmon3-3.0.3

Minor fixes.

- Add sysmon3.desktop and sysmon3.png
- Fix a udp problem when the system returns an IPv6 address for localhost.
- Fix some build warnings with gcc-16.

sysmon3-3.0.2

This is a bug release.

- Actually update the version number.
- Ensure hostname is displayed on initial startup.

sysmon3-3.0.1

This is a bug release.

- Eliminate a segfault when the application exits before a 
  server is established.

- Ensure the timout for a UDP reply is set properly.
