--resolve ESL-72 fix const char* vs char* issue in swig

libs/esl/php/Makefile

@@ -17,6 +17,7 @@ all: ESL.so
 
 esl_wrap.cpp:
 	swig -module ESL -php5 -c++ -DMULTIPLICITY -I../src/include -o esl_wrap.cpp ../ESL.i
+	sed -e 's/  char \*type_name;/  const char \*type_name;/' -i esl_wrap.cpp
 
 esl_wrap.o: esl_wrap.cpp
 	$(CXX) $(CXX_CFLAGS) $(CXXFLAGS) $(LOCAL_CFLAGS) $(WRAP_GCC_WARNING_SILENCE) -c esl_wrap.cpp -o esl_wrap.o

libs/esl/php/esl_wrap.cpp

@@ -857,7 +857,7 @@ SWIG_ZTS_ConvertResourcePtr(zval *z, swig_type_info *ty, int flags TSRMLS_DC) {
   swig_object_wrapper *value;
   void *p;
   int type;
-  char *type_name;
+  const char *type_name;
 
   value = (swig_object_wrapper *) zend_list_find(z->value.lval, &type);
   if ( flags && SWIG_POINTER_DISOWN ) {