should detect invalid '-no-script' option when using '-declarative' option

The windows version of configure doesn't detect this invalid options combination.

Note that the unix 'configure' script detects such invalid combination in the below sh code:
—
if [ "$CFG_DECLARATIVE" = "yes" ]; then
if [ "$CFG_SCRIPT" = "no" -o "$CFG_GUI" = "no" ]; then
echo "Error: QtDeclarative was requested, but it can't be built due to QtScript or QtGui being disabled."
exit 1
fi
fi
—