fcgiwrap: Bump to 99c942c90063c73734e56bacaa65f947772d9186.

fcgiwrap: Bump to 99c942c90063c73734e56bacaa65f947772d9186.

fcgiwrap was not updated since April 2015, but the last GitHub release
is from February 2013.  Therefore, bump fcgiwrap to the latest commit
as it features fixes and improvements, but is unlikely to be part of a
release soon.

Update as well:
* the license file (latest commit features a COPYING file),
* the Config.in URL, as the previous "official" URL now returns an
  HTTP 502 error.

Signed-off-by: Thomas Claveirole <thomas.claveirole@green-communications.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>