Implement CAP between clients and znc

Right now, znc doesn't support any capabilities, but the general protocol works.
This also has the plus point that it stops direct CAP commands between the IRCd
and clients. That's a good thing because different clients might not support the
same CAPs and thus znc would have to translate between them.


git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@2022 726aef4b-f618-498e-8847-2d620e286838

IRCSock.cpp

@@ -671,6 +671,9 @@ void CIRCSock::ReadLine(const CString& sData) {
 					}
 				}
 			}
+
+			// Don't forward any CAP stuff to the client
+			return;
 		}
 	}