[valadoc] Require gee-0.8 >= 0.19.91

[Rico Tzschichholz <ricotz src gnome org>]

commit db5355b978ecda1fe0cf7e7ababe7542fd1bb1ab
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Mon Mar 13 08:58:26 2017 +0100

    Require gee-0.8 >= 0.19.91
    
    https://bugzilla.gnome.org/show_bug.cgi?id=774653

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index f9b9361..8b481b9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -26,7 +26,7 @@ PKG_PROG_PKG_CONFIG([0.21])
 ##
 
 VALA_REQUIRED=0.19.0
-LIBGEE_REQUIRED=0.8.0
+LIBGEE_REQUIRED=0.19.91
 LIBGVC_REQUIRED=2.16
 GLIB_REQUIRED=2.24.0
 LIBGDKPIXBUF_REQUIRED=2.0