Replaced 'includehints' with 'includes' in *.ui files.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

tools/designer/designer/preferences.ui

@@ -663,8 +663,7 @@
     <slot access="protected">destroy()</slot>
 </slots>
 <layoutdefaults spacing="6" margin="11"/>
-<includehints>
-    <includehint>styledbutton.h</includehint>
-    <includehint>styledbutton.h</includehint>
-</includehints>
+<includes>
+    <include location="global" impldecl="in implementation">styledbutton.h</include>
+</includes>
 </UI>

tools/qtconfig/mainwindowbase.ui

@@ -1838,9 +1838,8 @@
 </slots>
 <pixmapinproject/>
 <layoutdefaults spacing="4" margin="8"/>
-<includehints>
-    <includehint>colorbutton.h</includehint>
-    <includehint>colorbutton.h</includehint>
-    <includehint>previewframe.h</includehint>
-</includehints>
+<includes>
+    <include location="global" impldecl="in implementation">colorbutton.h</include>
+    <include location="global" impldecl="in implementation">previewframe.h</include>
+</includes>
 </UI>