raise the minimum qt version required to 4.6; this was needed as the new animation frameworks were absent in 4.5 and lower
--- a/QTfrontend/CMakeLists.txt Sat Nov 26 17:45:34 2011 +0100
+++ b/QTfrontend/CMakeLists.txt Sat Nov 26 17:47:55 2011 +0100
@@ -1,5 +1,5 @@
# Configure for Qt4
-set(QT_MIN_VERSION "4.5.0")
+set(QT_MIN_VERSION "4.6.0")
include(CheckLibraryExists)
set(QT_USE_QTCORE TRUE)