[libgee] Hide internal symbols

[Maciej Marcin Piechotka <mpiechotka src gnome org>]

commit f50c4213d1d0becfd5c5c941d4db9c8e2cce466d
Author: Maciej Piechotka <uzytkownik2 gmail com>
Date:   Sun Apr 27 14:30:03 2014 +0200

    Hide internal symbols

 configure.ac |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 5f02529..537af94 100644
--- a/configure.ac
+++ b/configure.ac
@@ -19,6 +19,7 @@ GLIB_REQUIRED=2.36
 VALA_ADD_CHECKFILE([gee/libgee_0_8_la_vala.stamp])
 VALA_ADD_CHECKFILE([tests/tests_vala.stamp])
 VALA_ADD_VALAFLAGS(--target-glib=$GLIB_REQUIRED)
+VALA_ADD_VALAFLAGS(--hide-internal)
 
 AC_ARG_ENABLE(doc, AS_HELP_STRING([--enable-doc], [Enable documentation generation]), enable_doc=$enableval, 
enable_doc=no)
 AM_CONDITIONAL(ENABLE_DOC, test x$enable_doc = xyes)
@@ -57,7 +58,7 @@ AC_SUBST(GLIB_LIBS)
 
 GOBJECT_INTROSPECTION_CHECK([0.9.0])
 
-VALA_CHECK([0.23.2])
+VALA_CHECK([0.24.0])
 
 AC_OUTPUT([Makefile
            gee-0.8.pc