[ELY-104] base 64 methods should not throw IllegalKeySpecException
Merge pull request #77 from dmlloyd/ely-104

[ELY-104] base 64 methods should not throw IllegalKeySpecException
Merge pull request #74 from dmlloyd/sasl-detect

Automate SASL provider detection
Delegating SASL client and server factories which establish an auth context for the duration of an authentication
SASL EXTERNAL client mechanism
SASL EXTERNAL server mechanism