Port badxml autotest to QMetaObjectBuilder

Port badxml autotest to QMetaObjectBuilder

The meta-object format is going to change for Qt5. Use QMOB to
insulate the badxml test from such changes.

(It just so happens that the QFAIL("a failure") statement is still on
line 109 after the refactoring, so the expected_badxml.* files'
location tags did not have to be changed.)

Change-Id: I04421d13c4df71c8004fa71cafc4823a59079a41
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>