BaseTools:ECC report errors on account of analyze special characters

BZ:https://bugzilla.tianocore.org/show_bug.cgi?id=1751

In case that a C function body contains the string of L'', L'\"',
L"\"", L''', L""", L"\"\"", L"\"^", L" \"", L"\" \"", ('L",\\\""')
ECC tool running under python3 interpreter will report error.
The antlr4 module misidentified this character

This patch is going to fix that issue.

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Zhiju.Fan <zhijux.fan@intel.com>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>

BaseTools/Source/Python/Ecc/c.py

@@ -495,6 +495,8 @@ def CollectSourceCodeDataIntoDB(RootDir):
     tuple = os.walk(RootDir)
     IgnoredPattern = GetIgnoredDirListPattern()
     ParseErrorFileList = []
+    TokenReleaceList = EccGlobalData.gConfig.TokenReleaceList
+    TokenReleaceList.extend(['L",\\\""'])
 
     for dirpath, dirnames, filenames in tuple:
         if IgnoredPattern.match(dirpath.upper()):
@@ -519,6 +521,7 @@ def CollectSourceCodeDataIntoDB(RootDir):
                 EdkLogger.info("Parsing " + FullName)
                 model = f.endswith('c') and DataClass.MODEL_FILE_C or DataClass.MODEL_FILE_H
                 collector = CodeFragmentCollector.CodeFragmentCollector(FullName)
+                collector.TokenReleaceList = TokenReleaceList
                 try:
                     collector.ParseFile()
                 except UnicodeError: