Bump version to v1.0.0-rc3

Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk>

configure.ac

@@ -17,7 +17,7 @@ dnl
 dnl You should have received a copy of the GNU Lesser General Public License
 dnl along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-AC_INIT([libcasefold], [1.0.0-rc2], [krisman@collabora.com], [libcasefold])
+AC_INIT([libcasefold], [1.0.0-rc3], [krisman@collabora.com], [libcasefold])
 
 dnl If you update this auxiliary directory, remember to also update the
 dnl value of $AUX_DIR in the 'bootstrap.sh' script.