matplotlib Code

add np and plt to default plot namespace in plot directive

Fix accessing uninitialized memory error.

Fix out-of-buffer read errors.

Use the word "snapping" everywhere for consistency. This is the word used in the outward-facing interface all along.

Support the "Enter" key event in the Qt4 backend.

cutils.py: fix and clarify absolute imports, so I don't get confused next time

[2895114] _get_data_path: improve py2exe handling and readability.
Also convert some imports to absolute.

cbook: handle empty string returned by locale.getpreferredencoding
Reported by Huziy Oleksandr.

[3015614] give examples/api/font_file.py a fighting chance on Linux and Win

numpy version check: make it more readable