Log Message:
Changes 2.0.12:
* Fixed a bug in ./configure which would sometimes assume that GTK is not
  installed whereas it actually is
* Fixed a race condition in nessus-adduser for users who do not configure
  their TMPDIR variable (thanks to Cyrille Barthelemy)
* Fixed a bug in nessus-update-plugins which would not update the plugins
  properly on all systems (thanks to Keith Butler)
* Fixed the installer to compile Nessus with GTK support if gtk-config OR
  pkg-config is installed.