Allow local-network acces on embedded devices by default

[Waldorf]

In short: #define TR_DEFAULT_RPC_WHITELIST "192.168.*.*,10.0.*.*" when TR_EMBEDDED is set.

[KyleK]

This assumes that everyone's local network is in the 192.168.*.* address range, which is not necesarily the case: ​http://en.wikipedia.org/wiki/Private_IP_address

Is it that big of a problem to start transmission-daemon once with the "-a" argument? After that the whitelist is stored in settings.json, so you won't have to add it everytime.

[livings124]

If a user turns on the whitelist, it's best to have everything off by default (except for the single default, of course). KyleK makes a good point as well.