Try PySide then PyQt4 for Qt4 examples.#2221

Merged

mdboom merged 2 commits intomatplotlib:masterfrom

Jul 17, 2013

Commits on Jul 17, 2013

Try PySide then PyQt4 for Qt4 examples.
Daniel O'Connor
committed
Use the same logic as MPL uses when picking Qt interface.
Daniel O'Connor
committed