Delayed qt loader.

def import_qt(glbls):
    """ Delayed qt loader. """
    if 'QtCore' in glbls:
        return
        
    from projexui.qt import QtCore, QtGui, wrapVariant, uic
    from projexui.widgets.xloggersplashscreen import XLoggerSplashScreen
    
    glbls['QtCore'] = QtCore
    glbls['QtGui'] = QtGui
    glbls['wrapVariant'] = wrapVariant
    glbls['uic'] = uic
    glbls['XLoggerSplashScreen'] = XLoggerSplashScreen