StdLib: Temporarily restrict compiler warnings so that sockets can be built using...

StdLib: Temporarily restrict compiler warnings so that sockets can be built using VS2015.

Update Copyright notice.
Add Build Options so that builds using VS2015 have the /Wv:11 options added to the CC_FLAGS.
This restricts the warnings generated by VS2015 (VC++) to just those that are produced by
version 11 of the C compiler, VS2010.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Daryl McDaniel <edk2-lists@mc2research.org>
Reviewed-by: Erik Bjorge <erik.c.bjorge@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19586 6f19259b-4bc3-4df7-8a09-765794883524