Add x509:setencode() function to change the encode of ASN.1 string.
Merge branch 'master' of https://github.com/brunoos/luasec
Examples update.
Version number -> 0.5.
Branching luasec to create luasec-polarssl:

Same API, but backed by PolarSSL instead of OpenSSL.

Still many things stubbed out, but creating a basic server and client
now works.