Convert embedded quotes in strings correctly

The regular expression which identifies strings literals in source
can not handle the case when a quote character is embedded in the
string. For example "Convert \"this\"" would not convert correctly
due to the embedded \" characters in the string. In order to avoid
this situation we can preprocess all the escape sequences in the source
prior to trying to identify string and character literals.

tools/conversion_tool/ebcdic2ascii.py

@@ -195,7 +195,7 @@ def convert_to_ascii(filenames, unicode_encode, skip_print_strings, \
 
     # main loop which identifies and encodes literals with hex escape sequences
     for line in Source:
-
+       
         # logic for line continuations; appends the lines
         if prev_line is not None:
             line = prev_line + line
@@ -223,6 +223,9 @@ def convert_to_ascii(filenames, unicode_encode, skip_print_strings, \
 
         # if it isn't to be skipped
         if not skip_line and not include_line:
+            #convert all the escape sequences first
+            line = re.sub(ESCAPE_RE, EncodeEscapeSeq, line);
+
             tokens_of_interest = re.split(SPLIT_RE, line)
             tokens_of_interest = filter(None, tokens_of_interest)