Fix Spyder CXXABI

Installing QT5 packages in support of OpenGL Python interfaces may result in messages when trying to start Spyder:

from PyQt5.QtWebEngineWidgets import QWebEnginePage
ImportError: ~/anaconda3/lib/python3.6/site-packages/numexpr/../../../ version `CXXABI_1.3.8' not found (required by /usr/lib/x86_64-linux-gnu/

from PyQt5.QtWebKitWidgets import QWebPage as QWebEnginePage
ImportError: ~/anaconda3/lib/python3.6/site-packages/PyQt5/../../../ symbol _ZN13QSGRenderNodeC2Ev, version Qt_5_PRIVATE_API not defined in file with link time reference

Assuming Anaconda / Miniconda Python installed at “~/anaconda3”, fix this by:

cp /usr/lib/x86_64-linux-gnu/ ~/anaconda3/lib/