[yelp-tools] configure.ac: Bump yelp-xsl dependency

[Shaun McCance <shaunm src gnome org>]

commit 03dcc8e9d643eb7c3892073f9a976ab6d368f9f8
Author: Shaun McCance <shaunm gnome org>
Date:   Mon Jun 29 10:48:50 2015 -0400

    configure.ac: Bump yelp-xsl dependency

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 524edb8..0d984fd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -39,7 +39,7 @@ fi
 
 PKG_CHECK_MODULES(YELP_XSL,
 [
-       yelp-xsl
+       yelp-xsl >= 3.17.3
 ])
 
 XSL_PATH="`$PKG_CONFIG --variable=xsltdir yelp-xsl`"