* configure.ac: Fix yesterday's use of uninitialised $version.
* net/gnutls.el (gnutls): Set :group to 'comm so it's near NSM.
Use usual GNU style for white space.
Fix gnutls problems caught by static checking.

* gnutls.c (Fgnutls_boot): Remove unused local.
(Fgnutls_boot): Fix pointer signedness.