There seems to be one opening parenthesis too many here on both lines.

Discovered after running into the following errors while cross-compiling for PowerPC/Qoriq:
```
src/_csrc/sha2.c: In function 'SHA256Final':
src/_csrc/sha2.c:484: error: expected ')' before ';' token
src/_csrc/sha2.c:485: error: expected ')' before '}' token
src/_csrc/sha2.c:485: error: expected ';' before '}' token
```

* we need to define these if they don't exist on any platform

* clean up some warnings

* swap decls to __cplusplus defines

* add bcrypt pbkdf bindings

* fix some headers

* stdint is not a thing older VS has, but we shouldn't need it

* swap to using openbsd bcrypt

* we should probably call this 3.0

* update tests to handle slight change in behavior, test better

* strip out code we're not using

* define this for linux

* py3 fix

* add a changelog to the readme

* maybe work with windows

* portable endian header, replace swaps, other windows fixes

* handle older windows compilers properly, handle glibc < 2.9, retab

* remove a todo, that's definitely the limit

* make these definitions conditional since some BSDs may already have them

* add $2a$ tests from crypt_blowfish-1.3

* update readme to note supported prefixes

* almost pointless commit

* add support for $2y$

test vectors from openwall crypt-blowfish1.3