REORG: include: move protocol.h to haproxy/protocol{,-t}.h
The protocol.h files are pretty low in the dependency and (sadly) used
by some files from common/. Almost nothing was changed except lifting a
few comments.
diff --git a/src/server.c b/src/server.c
index 29919ee..6f14e5a 100644
--- a/src/server.c
+++ b/src/server.c
@@ -35,7 +35,7 @@
#include <proto/checks.h>
#include <proto/connection.h>
#include <proto/port_range.h>
-#include <proto/protocol.h>
+#include <haproxy/protocol.h>
#include <proto/queue.h>
#include <proto/sample.h>
#include <proto/server.h>