[libgda/LIBGDA_5.2] Correction for bug #761424 (use vala 0.30)

[Vivien Malerba <vivien src gnome org>]

commit 00606f07d44c2172792f44cfb75576dd47fe43c4
Author: Vivien Malerba <malerba gnome-db org>
Date:   Sat Feb 6 19:04:29 2016 +0100

    Correction for bug #761424 (use vala 0.30)

 configure.ac |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 508f91c..630f758 100644
--- a/configure.ac
+++ b/configure.ac
@@ -547,13 +547,13 @@ fi
 vala_api="No Vala bindings will be generated"
 if test "x$enable_vala" = "xyes"
 then
-       AM_PROG_VALAC([0.26.0])
+       AM_PROG_VALAC([0.30.0])
        if test "x$VALA_API_VERSION" = "x"
        then
-               VAPIGEN_CHECK([0.26.0],[0.26],,no)
-               vala_api="0.26 (Default)"
+               VAPIGEN_CHECK([0.30.0],[0.30],,no)
+               vala_api="0.30 (Default)"
        else
-               VAPIGEN_CHECK([0.26.0],$VALA_API_VERSION,,no)
+               VAPIGEN_CHECK([0.30.0],$VALA_API_VERSION,,no)
                vala_api=$VALA_API_VERSION
        fi
 else