Added white space trimming program to toolkit. Trimmed whitespace off toolkit. Minor cleanup to extraext.

zsnes/src/tools/strutil.cpp

@@ -28,7 +28,7 @@ void Tokenize(const string& str, vector<string>& tokens, const string& delimiter
 {
   //Skip delimiters at beginning.
   string::size_type lastPos = str.find_first_not_of(delimiters, 0);
-  
+
   //Find first "non-delimiter".
   string::size_type pos     = str.find_first_of(delimiters, lastPos);
 
@@ -36,10 +36,10 @@ void Tokenize(const string& str, vector<string>& tokens, const string& delimiter
   {
     //Found a token, add it to the vector.
     tokens.push_back(str.substr(lastPos, pos - lastPos));
-    
+
     //Skip delimiters.  Note the "not_of"
     lastPos = str.find_first_not_of(delimiters, pos);
-    
+
     //Find next "non-delimiter"
     pos = str.find_first_of(delimiters, lastPos);
   }