Remove std:: prefixes from C functions in talk/.

std::memcpy -> memcpy for instance. This change was motivated by a
compile report complaining that std::rand() was used instead of rand(),
probably with a stdlib.h include instead of cstdlib. Use of C functions
without the std:: prefix is a lot more common, so removing std:: to
address this.

BUG=
R=tommi@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/9559004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5657 4adac7df-926f-26a2-2b94-8c16560cd09d

talk/examples/call/call_main.cc

@@ -25,9 +25,10 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <cstdio>
-#include <cstring>
+#include <stdio.h>
+#include <string.h>
 #include <time.h>
+
 #include <iomanip>
 #include <iostream>
 #include <vector>

talk/examples/call/console.cc

@@ -27,12 +27,14 @@
 
 #define _CRT_SECURE_NO_DEPRECATE 1
 
+#include <assert.h>
+
 #ifdef POSIX
 #include <signal.h>
 #include <termios.h>
 #include <unistd.h>
 #endif  // POSIX
-#include <cassert>
+
 #include "talk/base/logging.h"
 #include "talk/base/messagequeue.h"
 #include "talk/base/stringutils.h"

talk/examples/call/console.h

@@ -28,7 +28,7 @@
 #ifndef TALK_EXAMPLES_CALL_CONSOLE_H_
 #define TALK_EXAMPLES_CALL_CONSOLE_H_
 
-#include <cstdio>
+#include <stdio.h>
 
 #include "talk/base/thread.h"
 #include "talk/base/messagequeue.h"

talk/examples/login/login_main.cc

@@ -25,7 +25,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <cstdio>
+#include <stdio.h>
+
 #include <iostream>
 
 #include "talk/base/thread.h"