Modified qt4 to build without debug information.

qt/qt4/qt4.conf

@@ -35,7 +35,12 @@ export QT4DIR QT41DIR
 EOT
 }
 
-confopt="-prefix $root/$prefix -bindir $root/$bindir -libdir $root/$libdir -docdir $root/$docdir -headerdir $root/$includedir/$pkg -plugindir $root/$libdir/$pkg/plugins -datadir $root/$datadir/$pkg -translationdir $root/$datadir/$pkg/translations -sysconfdir $root/$sysconfdir -v -release"
+confopt="-prefix $root/$prefix -bindir $root/$bindir -libdir $root/$libdir -docdir $root/$docdir -headerdir $root/$includedir/$pkg -plugindir $root/$libdir/$pkg/plugins -datadir $root/$datadir/$pkg -translationdir $root/$datadir/$pkg/translations -sysconfdir $root/$sysconfdir -v"
+
+# Disable debug information, this interferes with qt4 suffix. With debug
+# enabled we end up with 2 sets of executables. One with qt4 suffix and
+# one without. As a result we end up with shared files with qt3.
+var_append confopt ' ' "-release -no-separate-debug-info"
 
 # Confirm the license automatically
 var_append confopt ' ' "-confirm-license"