StdLib: Changes needed to support XCODE5

I had to make the following changes to make this build work: >build -p AppPkg/AppPkg.dsc -a X64 -t XCODE5

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Andrew Fish <afish@apple.com>
Reviewed-by: Daryl McDaniel <daryl.mcdaniel@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16081 6f19259b-4bc3-4df7-8a09-765794883524
AppPkg: Add the Arithchk utility and clean up some build problems.

AppPkg\
  AppPkg.dsc
    Update copyright date
    Add Component ArithChk.inf
  Applications\
    Main\
      Main.inf
        Remove DevShell dependency
    Python\
      Python-2.7.2\Modules\
        socketmodule.c
          Initialize addro, in sock_sendto(), before use.
    ArithChk\
      ArithChk.inf
      arithchk.c
        NEW
        This is a direct port of the arithchk program which is included as part of the NetBSD gdtoa library.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by:  daryl.mcdaniel@intel.com
Reviewed-by:  Erik Bjorge <erik.c.bjorge@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16082 6f19259b-4bc3-4df7-8a09-765794883524