REORG: include: move ssl_sock.h to haproxy/ssl_sock{,-t}.h

Almost nothing changed, just moved a static inline at the end and moved
an export from the types to the main file.
diff --git a/src/tools.c b/src/tools.c
index a9ad82b..59903b1 100644
--- a/src/tools.c
+++ b/src/tools.c
@@ -46,10 +46,10 @@
 #include <haproxy/hlua.h>
 #include <haproxy/listener.h>
 #include <haproxy/namespace.h>
+#include <haproxy/ssl_sock.h>
 #include <haproxy/task.h>
 #include <haproxy/tools.h>
 #include <haproxy/proto_udp.h>
-#include <proto/ssl_sock.h>
 #include <proto/stream_interface.h>
 
 /* This macro returns false if the test __x is false. Many