Add and use CZNCSock instead of Csock everywhere

This class will be used to implement async DNS in a later commit.


git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1550 726aef4b-f618-498e-8847-2d620e286838

IRCSock.cpp

@@ -13,7 +13,7 @@
 #include "User.h"
 #include "znc.h"
 
-CIRCSock::CIRCSock(CUser* pUser) : Csock() {
+CIRCSock::CIRCSock(CUser* pUser) : CZNCSock() {
 	m_pUser = pUser;
 	m_bISpoofReleased = false;
 	m_bAuthed = false;