StdLib: Fix issue with Canonical output expansion of NL to CR NL and similar expansions.

StdLib: Fix issue with Canonical output expansion of NL to CR NL and similar expansions.

SysCalls.c: Add IGNSPEC to the "sane" termios settings so that, by default, function keys and other special keys are ignored.

fvwrite.c:
  Line 109: Change test to less-than zero since zero is a valid value.
  Line 113: Change test to greater-than zero since we only want to loop when there are characters available.
  Line 114: Force uio_resid to zero since it might have become negative on line 113.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by:  daryl.mcdaniel@intel.com
Reviewed-by:    erik.c.bjorge@intel.com
Reviewed-by:    lee.g.rosenbaum@intel.com
Reviewed-by:    jaben.carsey@intel.com
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14013 6f19259b-4bc3-4df7-8a09-765794883524