Work around the buggy detection of the Qt tools via qtchooser, which adds the -qt=foo 
flag even though the found tool is not qtchooser. 

--- configure.orig	2017-02-09 18:02:53 UTC
+++ configure
@@ -47562,7 +47562,6 @@ fi
 		#
 		# Add the -qt={version} argument to it.
 		#
-		UIC="$UIC -qt=$qt_version"
 	else
 		#
 		# Annoyingly, on some Linux distros (e.g. Debian)
@@ -47740,7 +47739,6 @@ fi
 		#
 		# Add the -qt={version} argument to it.
 		#
-		MOC="$MOC -qt=$qt_version"
 	else
 		#
 		# Annoyingly, on some Linux distros (e.g. Debian)
@@ -47918,7 +47916,6 @@ fi
 		#
 		# Add the -qt={version} argument to it.
 		#
-		RCC="$RCC -qt=$qt_version"
 	else
 		#
 		# Annoyingly, on some Linux distros (e.g. Debian)
@@ -48097,7 +48094,6 @@ fi
 		#
 		# Add the -qt={version} argument to it.
 		#
-		LRELEASE="$LRELEASE -qt=$qt_version"
 	else
 		#
 		# Annoyingly, on some Linux distros (e.g. Debian)