configure.ac: bump to stable project version 1.4

Author: merge

configure.ac

@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ(2.57)
-AC_INIT(tslib, 1.4-rc1, martin.kepplinger@ginzinger.com)
+AC_INIT(tslib, 1.4, martin.kepplinger@ginzinger.com)
 # AC_CONFIG_AUX_DIR(config)
 AM_INIT_AUTOMAKE([dist-bzip2 dist-xz subdir-objects])
 AC_CONFIG_SRCDIR([src/ts_close.c])