Fix for exceptions being turned off by default.

The qtbase change 2b21dd69d6a4e47f0ec3d3958ab1def0983ce76c has turned
off exceptions by default. This change enables them for one test that
relies on them.

Change-Id: Idbbfe27595f4dc8cd7118aac66203fb7c228003c
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>

tests/auto/xmlpatternssdk/xmlpatternssdk.pro

@@ -6,6 +6,8 @@ TARGET   = $$XMLPATTERNS_SDK
 TEMPLATE = lib
 DEFINES += Q_PATTERNISTSDK_BUILDING
 
+CONFIG += exceptions
+
 # lib_bundle ensures we get a framework on OS X, a library bundle.
 CONFIG  += resources