Don't use std_vector for static vectors.

Some implementations of std::vector do dumb stuff and the default constructor
actually allocates memory.  (Uggggggg.)  This causes problems if an app wants
to set a custom memory allocator, because by the time they do that these
vectors will have already allocated memory, and then if that memory needs to be
reallocated, by the custom allocator, we run into problems.

This fixes #209

P4:7032464

src/steamnetworkingsockets/clientlib/steamnetworkingsockets_connections.cpp

@@ -632,7 +632,7 @@ CSteamNetworkConnectionBase::~CSteamNetworkConnectionBase()
 	}
 }
 
-static std_vector<CSteamNetworkConnectionBase *> s_vecPendingDeleteConnections;
+static std::vector<CSteamNetworkConnectionBase *> s_vecPendingDeleteConnections;
 static ShortDurationLock s_lockPendingDeleteConnections( "connection_delete_queue" );
 
 void CSteamNetworkConnectionBase::ConnectionQueueDestroy()
@@ -661,7 +661,7 @@ void CSteamNetworkConnectionBase::ProcessDeletionList()
 	// want us to take a ShortDurationLock and then take any
 	// other locks.
 	s_lockPendingDeleteConnections.lock();
-	std_vector<CSteamNetworkConnectionBase *> vecTemp( std::move( s_vecPendingDeleteConnections ) );
+	std::vector<CSteamNetworkConnectionBase *> vecTemp( std::move( s_vecPendingDeleteConnections ) );
 	s_vecPendingDeleteConnections.clear();
 	s_lockPendingDeleteConnections.unlock();