properly namespace bind

Index: src/unix.cpp
--- src/unix.cpp.orig
+++ src/unix.cpp
@@ -86,7 +86,7 @@ UnixSocket::UnixSocket(const char* pathname, int backl
 	len = strlen(addr.sun_path) + sizeof(addr.sun_family) + 1;
 #endif
 	remove(pathname);
- 	if(bind(so, (struct sockaddr *)&addr, len)) {
+ 	if(::bind(so, (struct sockaddr *)&addr, len)) {
  		endSocket();
  		error(errBindingFailed);
  		return;