configure: bumb version to 1.2.17pre1 (for alsa-utils)

Signed-off-by: Jaroslav Kysela <perex@perex.cz>

Author: perexg

configure.ac

@@ -1,6 +1,6 @@
 dnl Process this file with autoconf to produce a configure script.
 AC_PREREQ([2.72])
-AC_INIT([alsa-lib], [1.2.16.1])
+AC_INIT([alsa-lib], [1.2.17pre1])
 
 AC_CONFIG_SRCDIR([src/control/control.c])
 AC_CONFIG_MACRO_DIR([m4])