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/config.ini

@@ -73,9 +73,9 @@ GeneralCheckNonAcsii = 1
 # Check whether UNI file is valid
 GeneralCheckUni = 1
 # Check Only use CRLF (Carriage Return Line Feed) line endings.
-self.GeneralCheckLineEnding = 1
+GeneralCheckLineEnding = 1
 # Check if there is no trailing white space in one line.
-self.GeneralCheckTrailingWhiteSpaceLine = 1
+GeneralCheckTrailingWhiteSpaceLine = 1
 
 #
 # Space Checking