StdLib: Clarify and improve comments.

StdLib: Clarify and improve comments.

Indentation has been corrected in all of the files.

LibC/Locale/multibyte_Utf8.c
LibC/Uefi/SysCalls.c
  Clarify and improve comments.

Include/sys/termios.h
  Add parameter names to function prototypes as referenced in the comments.

StdLibPrivateInternalFiles\Include\kfile.h
  Add comment for the fo_close fileop.

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@19588 6f19259b-4bc3-4df7-8a09-765794883524