Bump version: 1.5.0.50-5042-dirty → 1.6.0

Change-Id: I718c6223d0b1a2ffb68887c159546b78e141dffa
diff --git a/configure.ac b/configure.ac
index abdcc2f..69055fd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -82,10 +82,10 @@
 AC_HEADER_TIME
 AC_C_BIGENDIAN
 
-PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 1.8.0)
-PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty >= 1.8.0)
-PKG_CHECK_MODULES(LIBOSMOCTRL, libosmoctrl >= 1.8.0)
-PKG_CHECK_MODULES(LIBOSMOCODING, libosmocoding >= 1.8.0)
+PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 1.9.0)
+PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty >= 1.9.0)
+PKG_CHECK_MODULES(LIBOSMOCTRL, libosmoctrl >= 1.9.0)
+PKG_CHECK_MODULES(LIBOSMOCODING, libosmocoding >= 1.9.0)
 
 AC_ARG_ENABLE(sanitize,
 	[AS_HELP_STRING(