Add the "ui_" prefix to the header the uic generates, to match

qmake's behaviour.

Thanks to Ryan Winter for the hint.


[SVN r31033]

tools/build

@@ -1 +1 @@
-Subproject commit ec70d686d5ad7da37ffc1c8af5f4530bdad3928a
+Subproject commit ec673c840f44db4e4d1a45a2ea84f973c7c726e7