Use /var/lib/freeswitch as home directory on Debian

Previously we were using /var/run/freeswitch.

Julian pointed out that someone may actually want to keep information
around in the home directory.  For Gemeinschaft they need to keep the
.odbc.ini file here.

Thanks-to: Julian Pawlowski <julian.pawlowski@gmail.com>

debian/freeswitch.postinst

@@ -8,7 +8,7 @@ case "$1" in
     fi
     if ! getent passwd freeswitch >/dev/null; then
       useradd --system -g freeswitch -Gaudio \
-        -d /var/run/freeswitch \
+        -d /var/lib/freeswitch \
         -s /bin/false \
         -e '' \
         -c 'FreeSWITCH' \