BaseTools: Use absolute import in UPT

Based on "futurize -f libfuturize.fixes.fix_absolute_import

Contributed-under: TianoCore Contribution Agreement 1.1
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>

BaseTools/Source/Python/UPT/Library/Parsing.py

@@ -16,6 +16,7 @@
 '''
 Parsing
 '''
+from __future__ import absolute_import
 
 ##
 # Import Modules
@@ -42,7 +43,7 @@ from Logger import StringTable as ST
 import Logger.Log as Logger
 
 from Parser.DecParser import Dec
-import GlobalData
+from . import GlobalData
 
 gPKG_INFO_DICT = {}