Release Spot 2.9.3

* configure.ac, NEWS, doc/org/setup.org: Set version to 2.9.3.

NEWS

-New in spot 2.9.2.dev  (not yet released)
+New in spot 2.9.3 (2020-07-22)
 
-  Bugs fixed:
+  Bug fixed:
 
   - Completely fix the ltlcross issue mentionned in previous release.
 

configure.ac

@@ -21,7 +21,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 AC_PREREQ([2.63])
-AC_INIT([spot], [2.9.2.dev], [spot@lrde.epita.fr])
+AC_INIT([spot], [2.9.3], [spot@lrde.epita.fr])
 AC_CONFIG_AUX_DIR([tools])
 AC_CONFIG_MACRO_DIR([m4])
 AM_INIT_AUTOMAKE([1.11 gnu tar-ustar color-tests parallel-tests])

doc/org/setup.org

 #+OPTIONS: H:2 num:nil toc:t html-postamble:nil ^:nil
 #+EMAIL: spot@lrde.epita.fr
 #+HTML_LINK_HOME: index.html
-#+MACRO: SPOTVERSION 2.9.2
-#+MACRO: LASTRELEASE 2.9.2
-#+MACRO: LASTTARBALL [[http://www.lrde.epita.fr/dload/spot/spot-2.9.2.tar.gz][=spot-2.9.2.tar.gz=]]
-#+MACRO: LASTNEWS [[https://gitlab.lrde.epita.fr/spot/spot/blob/spot-2-9-2/NEWS][summary of the changes]]
-#+MACRO: LASTDATE 2020-07-21
+#+MACRO: SPOTVERSION 2.9.3
+#+MACRO: LASTRELEASE 2.9.3
+#+MACRO: LASTTARBALL [[http://www.lrde.epita.fr/dload/spot/spot-2.9.3.tar.gz][=spot-2.9.3.tar.gz=]]
+#+MACRO: LASTNEWS [[https://gitlab.lrde.epita.fr/spot/spot/blob/spot-2-9-3/NEWS][summary of the changes]]
+#+MACRO: LASTDATE 2020-07-22
 
 #+ATTR_HTML: :id spotlogo
 [[file:spot2.svg]]