Added ZString.c_str() function; Added MStrin operator=.

ZString.h

@@ -67,6 +67,12 @@ namespace coreutils {
 
       ZString(std::string string);
 
+      ///
+      /// Destructor for the ZString.
+      ///
+
+      ~ZString();
+      
       ///
       /// A friend method used to write the value of the ZString from the cursor
       /// point to an ostream using the << syntax.
@@ -131,6 +137,12 @@ namespace coreutils {
       ///
       ///
 
+      char* c_str();
+      
+      ///
+      ///
+      ///
+
       std::vector<ZString> &split(ZString &delimiter, size_t maxSize = 0);
 
       ///
@@ -293,6 +305,7 @@ namespace coreutils {
       char *data;
       char *cursor;
       size_t length;
+      char *cdata = NULL;
 
     private:
       std::vector<ZString> list;