launch a new Tor process at start

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With the stem library is possible launch a new Tor process with a specific configuration:

https://stem.torproject.org/api/process.html

I think we should implement this in TorTP, so we can stop to change the default Tor configuration in Freepto (see: https://github.com/AvANa-BBS/freepto-lb/blob/r-berenjena/config/includes.chroot/etc/tor/torrc) or in other debian-like systems

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I did some changes:

vvicaretti@cf79031
vvicaretti@7c1f85d

And I have created a new branch under vinc3nt/freepto-lb, witch cointain the vinc3nt/stem-tortp repo as a submodule

https://github.com/vinc3nt/freepto-lb/commits/vinc3nt/stem-tortp

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A build for partial testing can be found here:

http://dev.freepto.mx/dev/vinc3nt%2bvinc3nt%2bstem-tortp/150727_00.46_v1.1.0stable-3-g34104a2/