BaseTools: Add default BuildRuleOrder in tools_def.template

BaseTools: Add default BuildRuleOrder in tools_def.template

*_*_*_*_BUILDRULEORDER = nasm Nasm NASM asm Asm ASM S s
*_XCODE32_*_*_BUILDRULEORDER    = S s nasm Nasm NASM
*_XCLANG_*_*_BUILDRULEORDER     = S s nasm Nasm NASM
*_XCODE5_*_*_BUILDRULEORDER     = S s nasm Nasm NASM

Tool Chain in Mac Os will use S as the first priority. Other tool chains
use nasm as the first priority.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Yingke Liu <yingke.d.liu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17510 6f19259b-4bc3-4df7-8a09-765794883524