[Nut-upsdev] Default NUT PORT

[Arjen de Korte]

In my latest patch, I hardcoded the port NUT uses for TCP communication
(3493). The reason is, that I can't figure out a way how to change the
numeric value of the #define'd PORT into a character string. Using
snprintf() and a temporary buffer just seems wrong, since this should be
handled by the preprocessor, rather than at runtime.

The following files are affected:
- server/conf.c (line 205)
- server/upsd.c (line 1024)

Best regards, Arjen

PS  I don't want to use a numeric value, since the ports can also be set
through their service name (if we use getaddrinfo(), which is neat).