doc: v0.26 release.
bugfix: fixed build failure when --with-mail_ssl_module is specified while --with-http_ssl_module is not. thanks Xiaochen Wang for the report in #22.
bumped version to 0.27.
removed the README file.
Removing README
Merge remote-tracking branch 'upstream/master' into base32_alphabet
Improvement: moving basis32 array initialization to configuration phase