This patch improves the qt5webkit examples build for 2 aspects:

# Allows to build even if qt5base examples are not enabled
# Builds xmlpatterns example only if the qt5xmlpattern package has been built

Signed-off-by: Massimo Callegari <massimocallegari@yahoo.it>

Index: b/examples/webkitwidgets/webkitwidgets.pro
===================================================================
--- /dev/null
+++ b/examples/webkitwidgets/webkitwidgets.pro
@@ -8,5 +8,6 @@
             framecapture \
             browser \
             embedded \
-            scroller \
-            xmlpatterns
+            scroller
+
+qtHaveModule(xmlpatterns): SUBDIRS += xmlpatterns
Index: b/qtwebkit-examples.pro
===================================================================
--- /dev/null
+++ b/qtwebkit-examples.pro
@@ -3,3 +3,4 @@
 load(qt_parts)
 
 SUBDIRS += doc
+SUBDIRS += examples