BaseTools/Ecc: Fix import issues

1. Complete the full path for import statement. Use "EccMain" to
replace "Ecc" for the absolute path support.
2. Fix some issues on configuration file.
3. Fix an issue of RaiseError not working in EdkLogger.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hess Chen <hesheng.chen@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

BaseTools/Source/Python/Ecc/MetaDataParser.py

@@ -14,9 +14,9 @@
 from __future__ import absolute_import
 import Common.LongFilePathOs as os
 from CommonDataClass.DataClass import *
-from .EccToolError import *
+from Ecc.EccToolError import *
 from Common.MultipleWorkspace import MultipleWorkspace as mws
-from . import EccGlobalData
+from Ecc import EccGlobalData
 import re
 ## Get the inlcude path list for a source file
 #