1. Fix the logic on the CheckPolicy() checks. If any pass, it should be
a pass.
2. Fix the check for the key usage extensions. The check should be that
the usages are present to be valid.
3. Remove the redundant check for the optional key usages.
1. Fix build error when building without certificates.
2. Add the root CA option to the echoserver usage.
3. Update the readme file to include the new certificate option.
4. Added command line option to load a CA cert into the echoserver.
1. For the new X.509 user certificate support, add a new stub source
file for the wrapper code around wolfSSL's CertManager.
2. Update the makefile includes to use the new source file and header.
3. Update configure with the `--enable-certs` option.