[valadoc] Add hard dependency on vala-0.10 package.

[Florian Brosch <flobrosch src gnome org>]

commit 4c1ebea50f0b0f1d450b39c7206a48119bf40bcb
Author: Evan Nemerson <evan coeus-group com>
Date:   Wed Sep 22 02:09:14 2010 +0200

    Add hard dependency on vala-0.10 package.

 configure.in |   11 ++---------
 1 files changed, 2 insertions(+), 9 deletions(-)
---
diff --git a/configure.in b/configure.in
index 8cdaa49..9776d43 100644
--- a/configure.in
+++ b/configure.in
@@ -25,6 +25,7 @@ AM_CONDITIONAL(ENABLE_VALADOCORG, test x$enable_valadocorg = xyes)
 
 
 
+VALA_PACKAGE=vala-0.10
 LIBVALA_REQUIRED=0.10.0
 LIBGEE_REQUIRED=0.5
 LIBGVC_REQUIRED=2.16
@@ -46,15 +47,7 @@ PKG_CHECK_MODULES(GMODULE, gmodule-2.0 >= $GLIB_REQUIRED)
 AC_SUBST(GMODULE_CFLAGS)
 AC_SUBST(GMODULE_LIBS)
 
-PKG_CHECK_EXISTS(vala-0.12,
-[
-    PKG_CHECK_MODULES(LIBVALA, vala-0.10 >= $LIBVALA_REQUIRED)
-    VALA_PACKAGE=vala-0.10
-  ], [
-    PKG_CHECK_MODULES(LIBVALA, vala-0.12 >= $LIBVALA_REQUIRED)
-    VALA_PACKAGE=vala-0.12
-  ]
-)
+PKG_CHECK_MODULES(LIBVALA, $VALA_PACKAGE >= $LIBVALA_REQUIRED)
 AC_SUBST(LIBVALA_CFLAGS)
 AC_SUBST(LIBVALA_LIBS)
 AC_SUBST(VALA_PACKAGE)