BaseTools/Scripts: Add sample makefile for use with RunMakefile.py
    
    https://bugzilla.tianocore.org/show_bug.cgi?id=670
    
    Add sample makefile that can be used to test RunMakefile.py
    script and can also be used as a template to start a new
    PREBUILD/POSTBUILD makefile.
    
    This makefile contains TAB characters instead of spaces on
    purpose to maximize compatibility with make utilities.
    
    Cc: Liming Gao <liming.gao@intel.com>
    Cc: Yonghong Zhu <yonghong.zhu@intel.com>
    Contributed-under: TianoCore Contribution Agreement 1.0
    Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
    Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>