added remaining required Core.load_plugins() calls
SSLServer: fixed typo
BuiltinCore: register server instance after plugins are loaded
bcfg2-info: running packageresolve with no packages uses the actual package list of the host
fixed long lines
Compat: b64encode for py3k that works on strings and bytes
Compat: better b64encode/decode funcs for py3k
POSIXUsers: strip whitespace from MemberOf tags
POSIXUsers: allow better <MemberOf group="foo"/> syntax
fixed unit tests
Systemd: systemd is a replacement for chkconfig

Signed-off-by: Sol Jerome <sol.jerome@gmail.com>