BNPH-6149: allow to use system curl again, fix some types on auth_scheme values to all be long, don't use curl private function in our wrapper.  This may cause missing symbol curl_easy_setopt with visibility turned on, if it does that, please let me know

FS-6342 --resolve regression from 804ef770 Missed part of properly implementing the case-insensitive mode on the hash causing the dp lookup xml not to match XML

These all were set before but now are disabled by default because they are not proper to have enabled without a good reason.

tcp-unreg-on-socket-close

If registration is TCP or TLS and socket connection is interrupted, unregister the client.

tcp-always-nat

Treat all TCP connections as NATTED, this causes all traffic back to the phone to reuse the existing TCP socket but may
cause problems when not used with TCP keepalive.

tls-always-nat

Same as tcp-always-nat but only for TLS connections.

Cisco 7925g send access status message with just 8 byte of payload data.
Since we don't interpret the unknown 3rd field anyway, remove it. This
will prevent the first register to fail.
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Nathan Neulinger <nneul@neulinger.org>

WiFi phones like the 7925g may take longer than just one second to
acknowledge the open receive message. Increase the timeout to 5 seconds.
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Nathan Neulinger <nneul@neulinger.org>

Cisco 7925G seem to work only with the correct conference_id2 and
rtptimeout set, so add protocol 11 definition fields and set
conference_id2 correctly.
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Nathan Neulinger <nneul@neulinger.org>

make event and log bulk configurable