add bcrypt support - early commit
 - bcrypt improvements
 - Fix indents
 - Move crypt_blowfish to util/
 - Remove unnecessary files
Fix bcrypt
Improve bcrypt
Simplify crypt_blowfish dependency
Simplify crypt_blowfish
Add bcrypt rehash support
Make plaintext default password storage type
sess_end for authreg to cleanup private data

Given that we now allow for authreg providers to store private data
in sess_st and it is an opaque object for c2s, we now call back
into authreg via sess_end to allow it to cleanup its internal data.
add bcrypt support via @monsterkane
Merge branch 'bcrypt' of github.com:weheartwebsites/jabberd2 into bcrypt
Merge pull request #77 from sdebnath/sess_free

sess_end for authreg to cleanup private data
Merge pull request #78 from weheartwebsites/bcrypt

bcrypt support for MySQL storage
Update README
Invalid INTEGER/BOOLEAN values are saved to database storages in x86_64.

Discussion can be found at: https://github.com/jabberd2/jabberd2/issues/67
Merge pull request #84 from sdebnath/int-fix

Fixed INTEGER/BOOLEAN values handling in storage on 64bit platforms