add manpage

The file is generated by command `ronn`.
avoid deadlocks when the LOG_LEVEL is set to DEBUG

`fprintf` and `syslog` are thread-safe but not reentrant.
If a signal happen during those functions and the handler calling them
again, the deadlock is form.  Therefore, we need to block signals until
we leave they realm.
update changelog
Quickly update documentation for new permissions drop, log ,ulog

Signed-off-by: Etienne CHAMPETIER <etienne.champetier@free.fr>
insert/update release time stamp
grow cmd_buff size to allow longer BinVoucher cmdline and parameters

as it was, there was hardly enough chars even for the client's mac argument,
which would get cut in half when the binary was called.

Signed-off-by: Gui Iribarren <gui@altermundi.net>
Merge pull request #15 from libre-mesh/master

grow cmd_buff size to allow longer BinVoucher cmdline and parameters
add missing git clone command to instructions
check if TrafficControl is enabled before testing imq module requirement.

This avoids failing to start in current OpenWrt Attitude Adjustment and trunk,
which lack IMQ support (and WONTFIX). Suggested in the issue discussed in:
http://ml.ninux.org/pipermail/nodogsplash/2013-May/000009.html

Signed-off-by: Gui Iribarren <gui@altermundi.net>
recognize yes, true or 1 as valid TrafficControl values

Signed-off-by: Gui Iribarren <gui@altermundi.net>
fix compiler warnings
disable all traffic control code when traffic_control is set to 0
removed unused icmp socket/ping code
use procd as OpenWrt tries to move away from init (available in current OpenWrt trunk), thanks @lynxis
clarify sentence
add conffiles
fix spelling and add reference to example configuration file
fix regression introduced in 73e5b8d (ref #18); revert all iptables -I/-A changes
make upload/download values returned by BinVoucher script call optional as claimed by the docs
update changelog and bump version