BaseTools:Coding problems caused by special characters

BaseTools:Coding problems caused by special characters

BZ:https://bugzilla.tianocore.org/show_bug.cgi?id=1670

During BaseTools compiling under Chinese or Japanese
language Windows, python exception occurring.
UnicodeDecodeError: 'ascii' codec can't decode byte 0xbd
in position 3528: ordinal not in range(128)

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Zhiju.Fan <zhijux.fan@intel.com>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>