[libgda] Require valac 0.30

[Vivien Malerba <vivien src gnome org>]

commit a05c667edf70164b42892d32621a9e8804b044c6
Author: Vivien Malerba <malerba gnome-db org>
Date:   Sun Nov 29 14:08:27 2015 +0100

    Require valac 0.30

 configure.ac |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index ccdfb9f..152f676 100644
--- a/configure.ac
+++ b/configure.ac
@@ -571,13 +571,13 @@ 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=$VALA_API_VERSION
        fi
 else
@@ -625,7 +625,7 @@ then
                fi,
                if test "$enable_crypto" = "yes"
                then
-                       AC_MSG_ERROR([libcrypto support requested but not found])
+                       AC_MSG_ERROR([libcrypto (part of OpenSSL) support requested but not found])
                fi)
 fi