Added char * << to MString for string assignment.

MString.cpp

@@ -1,6 +1,5 @@
 #include "MString.h"
 #include "Log.h"
-#include <iostream>
 #include <stdlib.h>
 #include <iomanip>
 
@@ -56,6 +55,27 @@ namespace coreutils {
       memcpy(data + len, value.getData(), value.getLength());
       return *this;            
    }
+
+   MString& MString::operator=(const char *value) {
+      int len = strlen(value);
+      setSize(len);
+      memcpy(data, value, len);
+      return *this;            
+   }
+
+   MString& MString::operator=(char value) {
+      int len = 1;
+      setSize(1);
+      *data = value;
+      return *this;            
+   }
+
+   MString& MString::operator<<(const char *value) {
+      int len = strlen(value);
+      setSize(len);
+      memcpy(data, value, len);
+      return *this;            
+   }
    
    int MString::write(char ch) {
       setSize(length + 1);