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/Table/TableIdentifier.py

@@ -17,7 +17,7 @@
 from __future__ import absolute_import
 import Common.EdkLogger as EdkLogger
 from Common.StringUtils import ConvertToSqlString
-from .Table import Table
+from Table.Table import Table
 
 ## TableIdentifier
 #