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/c.py

@@ -17,14 +17,14 @@ import sys
 import Common.LongFilePathOs as os
 import re
 import string
-from . import CodeFragmentCollector
-from . import FileProfile
+from Ecc import CodeFragmentCollector
+from Ecc import FileProfile
 from CommonDataClass import DataClass
-from . import Database
+from Ecc import Database
 from Common import EdkLogger
-from .EccToolError import *
-from . import EccGlobalData
-from . import MetaDataParser
+from Ecc.EccToolError import *
+from Ecc import EccGlobalData
+from Ecc import MetaDataParser
 
 IncludeFileListDict = {}
 AllIncludeFileListDict = {}