Replace C++-style comments with C-style comments

C90 does not recognize C++ style comments.  Replace with C-style comments
for compatibility.

Jira:  AXIS2C-1688


diff --git a/src/core/clientapi/svc_client.c b/src/core/clientapi/svc_client.c
index 65935d0..7d41c30 100644
--- a/src/core/clientapi/svc_client.c
+++ b/src/core/clientapi/svc_client.c
@@ -1295,7 +1295,7 @@
             node = axiom_soap_body_get_base_node(soap_body, env);
             if(node)
             {
-				//Get compatibility with anothers Web Services Frameworks, adjust payload with xmlns
+				/* Get compatibility with anothers Web Services Frameworks, adjust payload with xmlns */
 				axiom_element_t *element = (axiom_element_t*)axiom_node_get_data_element(node, env);
 				
 				axiom_attribute_t *attXmlXsi = axiom_attribute_create(env, "xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance", NULL);
diff --git a/src/core/transport/http/common/http_worker.c b/src/core/transport/http/common/http_worker.c
index 7ce258a..0e8d232 100644
--- a/src/core/transport/http/common/http_worker.c
+++ b/src/core/transport/http/common/http_worker.c
@@ -1915,7 +1915,7 @@
                     axis2_char_t content_len_str[10];
                     axis2_http_header_t *content_len_hdr = NULL;
 
-					//Adds more 2 to http content length to involve CR and LF chars
+					/* Adds more 2 to http content length to involve CR and LF chars */
 					content_length += 2;
 
                     sprintf(content_len_str, "%d", content_length);
diff --git a/util/src/stream.c b/util/src/stream.c
index 3592538..bdc4e03 100644
--- a/util/src/stream.c
+++ b/util/src/stream.c
@@ -104,7 +104,7 @@
 {
 	AXIS2_ENV_CHECK(env, AXIS2_FAILURE);
 
-	//avoid access violation / segment fault
+	/* avoid access violation / segment fault */
 	if (stream == NULL)
 	{
 		return;