Provide complete PKI capability

[JavaJoeS]

Currently there is a process that attempts to provide an SSLContext, but only uses a TrustStore.
A more complete implementation provides both a KeyStoreManager and a TruststoreManager.
There should be a choice for the user which, if any they desire. The key is to provide backward
compatibility.

[scottslewis]

Hi @JavaJoeS . Just to let you know...I'm going to be taking a few days before looking at this. If it goes too long, please remind me.

[JavaJoeS]

@scottslewis Will do. re-sync'd original fork and added changes to it. No check ins yet? I was gonna check
everything in at once so no squish required! ... ALl looking really good so far. I tested to see what happens
if no PKI is installed and code runs same as it did without change.

[JavaJoeS]

@scottslewis I checked in code to fork. Everything should be backward compatible. SO you get no effects unless you enable the org.eclipse.core.pki. If you wanna have instruction on doing that I can help..