Updated snappy cffi to use CFFI 1.0 out-of-line API mode

[shenberg]

We've been getting race conditions with the older cffi method because it creates the .so file in run time, so several forking processes overwrite eachothers' .so files.

I updated the library to use the cffi 1.0 API out-of-line mode which builds the .so file on package install instead of dynamically when it's loaded.

[yuvalbar]

👍

[yuvalbar]

@andrix Any chance to get this merged and issue a new version?

[martindurant]

I can merge. By release, do you mean a git-tag, pypi, conda-forge or all three?

[yuvalbar]

@martindurant I mean git tag and pypi at least, so that we can pip install the new version

[martindurant]

OK, I can do that probably this evening. @yuvalbar , @shenberg , I would appreciate if you had a moment to consider whether any of the pending PRs merit inclusion.

[martindurant]

https://pypi.python.org/pypi/python-snappy/0.5.2

[shenberg]

Thanks!
#21 can be closed (setuptools is already used)
#30 can be closed (different PR was merged that made this change already)

#35 <-- I would say that should be a separate project using python-snappy