[libxslt] Fix forwards compatibility for imported stylesheets

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 3300b01fc229855100610e4e8ef272b2af6c77f3
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Sun Jul 3 15:06:33 2016 +0200

    Fix forwards compatibility for imported stylesheets

 libxslt/xslt.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/libxslt/xslt.c b/libxslt/xslt.c
index 88d3798..d41a98d 100644
--- a/libxslt/xslt.c
+++ b/libxslt/xslt.c
@@ -6423,10 +6423,11 @@ xsltParseStylesheetProcess(xsltStylesheetPtr ret, xmlDocPtr doc) {
                "xsltParseStylesheetProcess : document is stylesheet\n");
 #endif
 
-       if (!xmlStrEqual(prop, (const xmlChar *)"1.0")) {
+       if ((!xmlStrEqual(prop, (const xmlChar *)"1.0")) &&
+            (!xmlStrEqual(prop, (const xmlChar *)"1.1"))) {
            xsltTransformError(NULL, ret, cur,
-               "xsl:version: only 1.0 features are supported\n");
-            /* TODO set up compatibility when not XSLT 1.0 */
+               "xsl:version: only 1.1 features are supported\n");
+            ret->forwards_compatible = 1;
            ret->warnings++;
        }
        xmlFree(prop);