BaseTools: Add WindowsLike path in front of PATH Env

BaseTools: Add WindowsLike path in front of PATH Env

Original BaseTools source build append WindowsLike path to PATH Env,
while WINDDK installation has a "build.exe", if user place WINDDK
folder to PATH either during WINDDK installation or manually, it will
block the BaseTools' build.bat.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>