Use a Unique Kernel Session Name

[brianrob]

PerfView currently uses the singleton "NT Kernel Logger" session name for the kernel session. This can result in interface by and with other tracing tools. For operating systems that support it, we should use session name that is more unique to PerfView/TraceEvent so that we don't interfere with other tools that use the "NT kernel Logger" name.

Note: It's mentioned in #1776 that we might run into an issue with some keywords, so we should investigate this as part of any change.