Port the fixtures file
travis: Set variable for Darwin and check that.

There were a bunch of `$(uname -s) == 'Darwin'` calls which have now
been consolidated into one setting that's being checked everywhere.

Additionally one branch was inverted. We were using `if DARWIN; else`
everywhere except for in one place where the negated form was used. In
order to keep it consistent with the rest of the script the branches
have been swapped.
travis: Forgot a 'W" in DARWIN.
travis: Typing Darwin is really hard.
Merge pull request #1099 from daenney/if-darwin

travis: Set variable for Darwin and check that.
remove raw numbers properties from the RSA*Key interfaces

refs #1026. Concrete class (that will be deprecated in another PR)
still possesses them for backwards compatibility purposes.
add rsa_generate_private_key function to replace RSAPrivateKey.generate

refs #1026. #1101 is dependent on this
fix coverage
more coverage...
add load_rsa_*_numbers functions
add some missing docs
Merge pull request #1103 from reaperhulk/fix-1097

add load_rsa_*_numbers functions
Merge branch 'master' into use-numbers
Switch the tests to load numbers
Merge pull request #1100 from reaperhulk/rsa-numbers-remove-public

Remove raw numbers properties from the RSA*Key interfaces
Fixed serialization tests
rename the function
pep8
Merge pull request #1104 from alex/use-numbers

Use numbers
Add ALPN support.